Home / 1,502.20-2,251.41-1,228.78

Finding the Fourth Proportional to 1,502.20, 2,251.41 and 1,228.78

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Solution

The fourth proportional to 1,502.20, 2,251.41 and 1,228.78 is: 1,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.20 : 2,251.41 = 1,228.78 : x
  2. Step 2: Convert to fraction form
    1,502.20/2,251.41 = 1,228.78/x
  3. Step 3: Cross multiply
    1,502.20x = 2,251.41 × 1,228.78
  4. Step 4: Simplify right side
    1,502.20x = 2,766,487.58
  5. Step 5: Solve for x
    x = 2,766,487.58/1,502.20
  6. Step 6: Final answer
    x = 1,841.62

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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.