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Finding the Fourth Proportional to 6,988.43, 10,488.90 and 6,246.86

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Solution

The fourth proportional to 6,988.43, 10,488.90 and 6,246.86 is: 9,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.43 : 10,488.90 = 6,246.86 : x
  2. Step 2: Convert to fraction form
    6,988.43/10,488.90 = 6,246.86/x
  3. Step 3: Cross multiply
    6,988.43x = 10,488.90 × 6,246.86
  4. Step 4: Simplify right side
    6,988.43x = 65,522,689.85
  5. Step 5: Solve for x
    x = 65,522,689.85/6,988.43
  6. Step 6: Final answer
    x = 9,375.88

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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.