Home / 2,275.50-3,387.20-2,169.30

Finding the Fourth Proportional to 2,275.50, 3,387.20 and 2,169.30

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Solution

The fourth proportional to 2,275.50, 3,387.20 and 2,169.30 is: 3,229.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.50 : 3,387.20 = 2,169.30 : x
  2. Step 2: Convert to fraction form
    2,275.50/3,387.20 = 2,169.30/x
  3. Step 3: Cross multiply
    2,275.50x = 3,387.20 × 2,169.30
  4. Step 4: Simplify right side
    2,275.50x = 7,347,842.11
  5. Step 5: Solve for x
    x = 7,347,842.11/2,275.50
  6. Step 6: Final answer
    x = 3,229.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.