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Finding the Fourth Proportional to 8,377.45, 11,561.10 and 4,743.20

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Solution

The fourth proportional to 8,377.45, 11,561.10 and 4,743.20 is: 6,545.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,377.45 : 11,561.10 = 4,743.20 : x
  2. Step 2: Convert to fraction form
    8,377.45/11,561.10 = 4,743.20/x
  3. Step 3: Cross multiply
    8,377.45x = 11,561.10 × 4,743.20
  4. Step 4: Simplify right side
    8,377.45x = 54,836,609.52
  5. Step 5: Solve for x
    x = 54,836,609.52/8,377.45
  6. Step 6: Final answer
    x = 6,545.74

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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.