Home / 1,436.92-2,155.34-614.78

Finding the Fourth Proportional to 1,436.92, 2,155.34 and 614.78

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Solution

The fourth proportional to 1,436.92, 2,155.34 and 614.78 is: 922.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.92 : 2,155.34 = 614.78 : x
  2. Step 2: Convert to fraction form
    1,436.92/2,155.34 = 614.78/x
  3. Step 3: Cross multiply
    1,436.92x = 2,155.34 × 614.78
  4. Step 4: Simplify right side
    1,436.92x = 1,325,059.93
  5. Step 5: Solve for x
    x = 1,325,059.93/1,436.92
  6. Step 6: Final answer
    x = 922.15

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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.