Home / 3,925.31-5,416.90-2,132.78

Finding the Fourth Proportional to 3,925.31, 5,416.90 and 2,132.78

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Solution

The fourth proportional to 3,925.31, 5,416.90 and 2,132.78 is: 2,943.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.31 : 5,416.90 = 2,132.78 : x
  2. Step 2: Convert to fraction form
    3,925.31/5,416.90 = 2,132.78/x
  3. Step 3: Cross multiply
    3,925.31x = 5,416.90 × 2,132.78
  4. Step 4: Simplify right side
    3,925.31x = 11,553,028.90
  5. Step 5: Solve for x
    x = 11,553,028.90/3,925.31
  6. Step 6: Final answer
    x = 2,943.21

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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.