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Finding the Fourth Proportional to 8,778.75, 12,114.69 and 5,799.57

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Solution

The fourth proportional to 8,778.75, 12,114.69 and 5,799.57 is: 8,003.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.75 : 12,114.69 = 5,799.57 : x
  2. Step 2: Convert to fraction form
    8,778.75/12,114.69 = 5,799.57/x
  3. Step 3: Cross multiply
    8,778.75x = 12,114.69 × 5,799.57
  4. Step 4: Simplify right side
    8,778.75x = 70,259,992.68
  5. Step 5: Solve for x
    x = 70,259,992.68/8,778.75
  6. Step 6: Final answer
    x = 8,003.42

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Find fourth proportional to 4,389.38, 6,057.35 and 2,899.79
Half scale
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Double scale
Find fourth proportional to 8,779.75, 12,116.07 and 5,800.57
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.