Home / 8,906.55-12,291.51-5,130.73

Finding the Fourth Proportional to 8,906.55, 12,291.51 and 5,130.73

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Solution

The fourth proportional to 8,906.55, 12,291.51 and 5,130.73 is: 7,080.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.55 : 12,291.51 = 5,130.73 : x
  2. Step 2: Convert to fraction form
    8,906.55/12,291.51 = 5,130.73/x
  3. Step 3: Cross multiply
    8,906.55x = 12,291.51 × 5,130.73
  4. Step 4: Simplify right side
    8,906.55x = 63,064,419.10
  5. Step 5: Solve for x
    x = 63,064,419.10/8,906.55
  6. Step 6: Final answer
    x = 7,080.68

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Half scale
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Double scale
Find fourth proportional to 8,907.55, 12,292.89 and 5,131.73
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.