Home / 5,385.92-8,080.25-2,752.40

Finding the Fourth Proportional to 5,385.92, 8,080.25 and 2,752.40

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Solution

The fourth proportional to 5,385.92, 8,080.25 and 2,752.40 is: 4,129.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.92 : 8,080.25 = 2,752.40 : x
  2. Step 2: Convert to fraction form
    5,385.92/8,080.25 = 2,752.40/x
  3. Step 3: Cross multiply
    5,385.92x = 8,080.25 × 2,752.40
  4. Step 4: Simplify right side
    5,385.92x = 22,240,086.54
  5. Step 5: Solve for x
    x = 22,240,086.54/5,385.92
  6. Step 6: Final answer
    x = 4,129.31

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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.