Home / 3,957.68-5,460.78-2,279.12

Finding the Fourth Proportional to 3,957.68, 5,460.78 and 2,279.12

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Solution

The fourth proportional to 3,957.68, 5,460.78 and 2,279.12 is: 3,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.68 : 5,460.78 = 2,279.12 : x
  2. Step 2: Convert to fraction form
    3,957.68/5,460.78 = 2,279.12/x
  3. Step 3: Cross multiply
    3,957.68x = 5,460.78 × 2,279.12
  4. Step 4: Simplify right side
    3,957.68x = 12,445,772.91
  5. Step 5: Solve for x
    x = 12,445,772.91/3,957.68
  6. Step 6: Final answer
    x = 3,144.71

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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.