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Finding the Fourth Proportional to 8,299.04, 12,387.86 and 7,314.90

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Solution

The fourth proportional to 8,299.04, 12,387.86 and 7,314.90 is: 10,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,299.04 : 12,387.86 = 7,314.90 : x
  2. Step 2: Convert to fraction form
    8,299.04/12,387.86 = 7,314.90/x
  3. Step 3: Cross multiply
    8,299.04x = 12,387.86 × 7,314.90
  4. Step 4: Simplify right side
    8,299.04x = 90,615,957.11
  5. Step 5: Solve for x
    x = 90,615,957.11/8,299.04
  6. Step 6: Final answer
    x = 10,918.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.