Home / 3,439.97-5,156.90-1,248.21

Finding the Fourth Proportional to 3,439.97, 5,156.90 and 1,248.21

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Solution

The fourth proportional to 3,439.97, 5,156.90 and 1,248.21 is: 1,871.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.97 : 5,156.90 = 1,248.21 : x
  2. Step 2: Convert to fraction form
    3,439.97/5,156.90 = 1,248.21/x
  3. Step 3: Cross multiply
    3,439.97x = 5,156.90 × 1,248.21
  4. Step 4: Simplify right side
    3,439.97x = 6,436,892.59
  5. Step 5: Solve for x
    x = 6,436,892.59/3,439.97
  6. Step 6: Final answer
    x = 1,871.21

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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.