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Finding the Fourth Proportional to 8,757.10, 13,135.65 and 5,476.60

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Solution

The fourth proportional to 8,757.10, 13,135.65 and 5,476.60 is: 8,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.10 : 13,135.65 = 5,476.60 : x
  2. Step 2: Convert to fraction form
    8,757.10/13,135.65 = 5,476.60/x
  3. Step 3: Cross multiply
    8,757.10x = 13,135.65 × 5,476.60
  4. Step 4: Simplify right side
    8,757.10x = 71,938,700.79
  5. Step 5: Solve for x
    x = 71,938,700.79/8,757.10
  6. Step 6: Final answer
    x = 8,214.90

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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.