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Finding the Fourth Proportional to 7,325.91, 10,115.55 and 6,766.16

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Solution

The fourth proportional to 7,325.91, 10,115.55 and 6,766.16 is: 9,342.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.91 : 10,115.55 = 6,766.16 : x
  2. Step 2: Convert to fraction form
    7,325.91/10,115.55 = 6,766.16/x
  3. Step 3: Cross multiply
    7,325.91x = 10,115.55 × 6,766.16
  4. Step 4: Simplify right side
    7,325.91x = 68,443,379.21
  5. Step 5: Solve for x
    x = 68,443,379.21/7,325.91
  6. Step 6: Final answer
    x = 9,342.65

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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.