Home / 4,251.20-6,376.80-3,781.40

Finding the Fourth Proportional to 4,251.20, 6,376.80 and 3,781.40

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Solution

The fourth proportional to 4,251.20, 6,376.80 and 3,781.40 is: 5,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,251.20 : 6,376.80 = 3,781.40 : x
  2. Step 2: Convert to fraction form
    4,251.20/6,376.80 = 3,781.40/x
  3. Step 3: Cross multiply
    4,251.20x = 6,376.80 × 3,781.40
  4. Step 4: Simplify right side
    4,251.20x = 24,113,231.52
  5. Step 5: Solve for x
    x = 24,113,231.52/4,251.20
  6. Step 6: Final answer
    x = 5,672.10

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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.