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Finding the Fourth Proportional to 8,446.66, 11,650.05 and 7,490.69

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Solution

The fourth proportional to 8,446.66, 11,650.05 and 7,490.69 is: 10,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,446.66 : 11,650.05 = 7,490.69 : x
  2. Step 2: Convert to fraction form
    8,446.66/11,650.05 = 7,490.69/x
  3. Step 3: Cross multiply
    8,446.66x = 11,650.05 × 7,490.69
  4. Step 4: Simplify right side
    8,446.66x = 87,266,854.78
  5. Step 5: Solve for x
    x = 87,266,854.78/8,446.66
  6. Step 6: Final answer
    x = 10,331.53

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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.