Home / 3,139.28-4,331.88-2,089.52

Finding the Fourth Proportional to 3,139.28, 4,331.88 and 2,089.52

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Solution

The fourth proportional to 3,139.28, 4,331.88 and 2,089.52 is: 2,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.28 : 4,331.88 = 2,089.52 : x
  2. Step 2: Convert to fraction form
    3,139.28/4,331.88 = 2,089.52/x
  3. Step 3: Cross multiply
    3,139.28x = 4,331.88 × 2,089.52
  4. Step 4: Simplify right side
    3,139.28x = 9,051,549.90
  5. Step 5: Solve for x
    x = 9,051,549.90/3,139.28
  6. Step 6: Final answer
    x = 2,883.32

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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.