Home / 1,436.25-2,155.11-614.30

Finding the Fourth Proportional to 1,436.25, 2,155.11 and 614.30

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Solution

The fourth proportional to 1,436.25, 2,155.11 and 614.30 is: 921.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.25 : 2,155.11 = 614.30 : x
  2. Step 2: Convert to fraction form
    1,436.25/2,155.11 = 614.30/x
  3. Step 3: Cross multiply
    1,436.25x = 2,155.11 × 614.30
  4. Step 4: Simplify right side
    1,436.25x = 1,323,883.12
  5. Step 5: Solve for x
    x = 1,323,883.12/1,436.25
  6. Step 6: Final answer
    x = 921.76

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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.