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Finding the Fourth Proportional to 6,471.57, 8,930.48 and 3,957.90

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Solution

The fourth proportional to 6,471.57, 8,930.48 and 3,957.90 is: 5,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,471.57 : 8,930.48 = 3,957.90 : x
  2. Step 2: Convert to fraction form
    6,471.57/8,930.48 = 3,957.90/x
  3. Step 3: Cross multiply
    6,471.57x = 8,930.48 × 3,957.90
  4. Step 4: Simplify right side
    6,471.57x = 35,345,946.79
  5. Step 5: Solve for x
    x = 35,345,946.79/6,471.57
  6. Step 6: Final answer
    x = 5,461.73

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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.