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Finding the Fourth Proportional to 6,691.86, 10,038.78 and 6,281.82

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Solution

The fourth proportional to 6,691.86, 10,038.78 and 6,281.82 is: 9,423.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.86 : 10,038.78 = 6,281.82 : x
  2. Step 2: Convert to fraction form
    6,691.86/10,038.78 = 6,281.82/x
  3. Step 3: Cross multiply
    6,691.86x = 10,038.78 × 6,281.82
  4. Step 4: Simplify right side
    6,691.86x = 63,061,808.98
  5. Step 5: Solve for x
    x = 63,061,808.98/6,691.86
  6. Step 6: Final answer
    x = 9,423.66

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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.