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Finding the Fourth Proportional to 4,781.55, 7,169.85 and 1,493.76

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Solution

The fourth proportional to 4,781.55, 7,169.85 and 1,493.76 is: 2,239.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.55 : 7,169.85 = 1,493.76 : x
  2. Step 2: Convert to fraction form
    4,781.55/7,169.85 = 1,493.76/x
  3. Step 3: Cross multiply
    4,781.55x = 7,169.85 × 1,493.76
  4. Step 4: Simplify right side
    4,781.55x = 10,710,035.14
  5. Step 5: Solve for x
    x = 10,710,035.14/4,781.55
  6. Step 6: Final answer
    x = 2,239.87

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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.