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Finding the Fourth Proportional to 8,708.90, 13,080.15 and 7,462.31

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Solution

The fourth proportional to 8,708.90, 13,080.15 and 7,462.31 is: 11,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.90 : 13,080.15 = 7,462.31 : x
  2. Step 2: Convert to fraction form
    8,708.90/13,080.15 = 7,462.31/x
  3. Step 3: Cross multiply
    8,708.90x = 13,080.15 × 7,462.31
  4. Step 4: Simplify right side
    8,708.90x = 97,608,068.75
  5. Step 5: Solve for x
    x = 97,608,068.75/8,708.90
  6. Step 6: Final answer
    x = 11,207.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.