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Finding the Fourth Proportional to 7,475.31, 11,217.65 and 6,910.65

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Solution

The fourth proportional to 7,475.31, 11,217.65 and 6,910.65 is: 10,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.31 : 11,217.65 = 6,910.65 : x
  2. Step 2: Convert to fraction form
    7,475.31/11,217.65 = 6,910.65/x
  3. Step 3: Cross multiply
    7,475.31x = 11,217.65 × 6,910.65
  4. Step 4: Simplify right side
    7,475.31x = 77,521,218.42
  5. Step 5: Solve for x
    x = 77,521,218.42/7,475.31
  6. Step 6: Final answer
    x = 10,370.30

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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.