Home / 3,948.42-5,451-2,885.12

Finding the Fourth Proportional to 3,948.42, 5,451 and 2,885.12

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Solution

The fourth proportional to 3,948.42, 5,451 and 2,885.12 is: 3,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.42 : 5,451 = 2,885.12 : x
  2. Step 2: Convert to fraction form
    3,948.42/5,451 = 2,885.12/x
  3. Step 3: Cross multiply
    3,948.42x = 5,451 × 2,885.12
  4. Step 4: Simplify right side
    3,948.42x = 15,726,789.12
  5. Step 5: Solve for x
    x = 15,726,789.12/3,948.42
  6. Step 6: Final answer
    x = 3,983.06

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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.