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Finding the Fourth Proportional to 5,404.60, 8,123.10 and 4,691.80

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Solution

The fourth proportional to 5,404.60, 8,123.10 and 4,691.80 is: 7,051.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,404.60 : 8,123.10 = 4,691.80 : x
  2. Step 2: Convert to fraction form
    5,404.60/8,123.10 = 4,691.80/x
  3. Step 3: Cross multiply
    5,404.60x = 8,123.10 × 4,691.80
  4. Step 4: Simplify right side
    5,404.60x = 38,111,960.58
  5. Step 5: Solve for x
    x = 38,111,960.58/5,404.60
  6. Step 6: Final answer
    x = 7,051.76

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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.