Home / 2,259.12-3,387.60-959.88

Finding the Fourth Proportional to 2,259.12, 3,387.60 and 959.88

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Solution

The fourth proportional to 2,259.12, 3,387.60 and 959.88 is: 1,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.12 : 3,387.60 = 959.88 : x
  2. Step 2: Convert to fraction form
    2,259.12/3,387.60 = 959.88/x
  3. Step 3: Cross multiply
    2,259.12x = 3,387.60 × 959.88
  4. Step 4: Simplify right side
    2,259.12x = 3,251,689.49
  5. Step 5: Solve for x
    x = 3,251,689.49/2,259.12
  6. Step 6: Final answer
    x = 1,439.36

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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.