Home / 1,545.56-2,319.17-1,123.45

Finding the Fourth Proportional to 1,545.56, 2,319.17 and 1,123.45

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Solution

The fourth proportional to 1,545.56, 2,319.17 and 1,123.45 is: 1,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.56 : 2,319.17 = 1,123.45 : x
  2. Step 2: Convert to fraction form
    1,545.56/2,319.17 = 1,123.45/x
  3. Step 3: Cross multiply
    1,545.56x = 2,319.17 × 1,123.45
  4. Step 4: Simplify right side
    1,545.56x = 2,605,471.54
  5. Step 5: Solve for x
    x = 2,605,471.54/1,545.56
  6. Step 6: Final answer
    x = 1,685.78

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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.