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Finding the Fourth Proportional to 3,432.70, 4,737.11 and 1,860.78

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Solution

The fourth proportional to 3,432.70, 4,737.11 and 1,860.78 is: 2,567.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.70 : 4,737.11 = 1,860.78 : x
  2. Step 2: Convert to fraction form
    3,432.70/4,737.11 = 1,860.78/x
  3. Step 3: Cross multiply
    3,432.70x = 4,737.11 × 1,860.78
  4. Step 4: Simplify right side
    3,432.70x = 8,814,719.55
  5. Step 5: Solve for x
    x = 8,814,719.55/3,432.70
  6. Step 6: Final answer
    x = 2,567.87

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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.