Home / 3,387.28-5,080.86-1,335.28

Finding the Fourth Proportional to 3,387.28, 5,080.86 and 1,335.28

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Solution

The fourth proportional to 3,387.28, 5,080.86 and 1,335.28 is: 2,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.28 : 5,080.86 = 1,335.28 : x
  2. Step 2: Convert to fraction form
    3,387.28/5,080.86 = 1,335.28/x
  3. Step 3: Cross multiply
    3,387.28x = 5,080.86 × 1,335.28
  4. Step 4: Simplify right side
    3,387.28x = 6,784,370.74
  5. Step 5: Solve for x
    x = 6,784,370.74/3,387.28
  6. Step 6: Final answer
    x = 2,002.90

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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.