Home / 4,761.20-7,125.60-4,372.40

Finding the Fourth Proportional to 4,761.20, 7,125.60 and 4,372.40

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Solution

The fourth proportional to 4,761.20, 7,125.60 and 4,372.40 is: 6,543.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.20 : 7,125.60 = 4,372.40 : x
  2. Step 2: Convert to fraction form
    4,761.20/7,125.60 = 4,372.40/x
  3. Step 3: Cross multiply
    4,761.20x = 7,125.60 × 4,372.40
  4. Step 4: Simplify right side
    4,761.20x = 31,155,973.44
  5. Step 5: Solve for x
    x = 31,155,973.44/4,761.20
  6. Step 6: Final answer
    x = 6,543.72

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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.