Home / 5,761.56-8,641.20-2,640.72

Finding the Fourth Proportional to 5,761.56, 8,641.20 and 2,640.72

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Solution

The fourth proportional to 5,761.56, 8,641.20 and 2,640.72 is: 3,960.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,761.56 : 8,641.20 = 2,640.72 : x
  2. Step 2: Convert to fraction form
    5,761.56/8,641.20 = 2,640.72/x
  3. Step 3: Cross multiply
    5,761.56x = 8,641.20 × 2,640.72
  4. Step 4: Simplify right side
    5,761.56x = 22,818,989.66
  5. Step 5: Solve for x
    x = 22,818,989.66/5,761.56
  6. Step 6: Final answer
    x = 3,960.56

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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.