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Finding the Fourth Proportional to 5,377.11, 8,064.32 and 1,913.55

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Solution

The fourth proportional to 5,377.11, 8,064.32 and 1,913.55 is: 2,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.11 : 8,064.32 = 1,913.55 : x
  2. Step 2: Convert to fraction form
    5,377.11/8,064.32 = 1,913.55/x
  3. Step 3: Cross multiply
    5,377.11x = 8,064.32 × 1,913.55
  4. Step 4: Simplify right side
    5,377.11x = 15,431,494.91
  5. Step 5: Solve for x
    x = 15,431,494.91/5,377.11
  6. Step 6: Final answer
    x = 2,869.85

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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.