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Finding the Fourth Proportional to 3,898.92, 5,381.46 and 2,574.84

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Solution

The fourth proportional to 3,898.92, 5,381.46 and 2,574.84 is: 3,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.92 : 5,381.46 = 2,574.84 : x
  2. Step 2: Convert to fraction form
    3,898.92/5,381.46 = 2,574.84/x
  3. Step 3: Cross multiply
    3,898.92x = 5,381.46 × 2,574.84
  4. Step 4: Simplify right side
    3,898.92x = 13,856,398.47
  5. Step 5: Solve for x
    x = 13,856,398.47/3,898.92
  6. Step 6: Final answer
    x = 3,553.91

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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.