Home / 8,142.75-11,235.55-4,999.95

Finding the Fourth Proportional to 8,142.75, 11,235.55 and 4,999.95

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Solution

The fourth proportional to 8,142.75, 11,235.55 and 4,999.95 is: 6,899.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.75 : 11,235.55 = 4,999.95 : x
  2. Step 2: Convert to fraction form
    8,142.75/11,235.55 = 4,999.95/x
  3. Step 3: Cross multiply
    8,142.75x = 11,235.55 × 4,999.95
  4. Step 4: Simplify right side
    8,142.75x = 56,177,188.22
  5. Step 5: Solve for x
    x = 56,177,188.22/8,142.75
  6. Step 6: Final answer
    x = 6,899.04

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Half scale
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Double scale
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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.