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Finding the Fourth Proportional to 7,663.71, 10,575.92 and 4,479.20

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Solution

The fourth proportional to 7,663.71, 10,575.92 and 4,479.20 is: 6,181.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,663.71 : 10,575.92 = 4,479.20 : x
  2. Step 2: Convert to fraction form
    7,663.71/10,575.92 = 4,479.20/x
  3. Step 3: Cross multiply
    7,663.71x = 10,575.92 × 4,479.20
  4. Step 4: Simplify right side
    7,663.71x = 47,371,633.65
  5. Step 5: Solve for x
    x = 47,371,633.65/7,663.71
  6. Step 6: Final answer
    x = 6,181.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.