Home / 1,436.85-2,155.50-615.13

Finding the Fourth Proportional to 1,436.85, 2,155.50 and 615.13

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Solution

The fourth proportional to 1,436.85, 2,155.50 and 615.13 is: 922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.85 : 2,155.50 = 615.13 : x
  2. Step 2: Convert to fraction form
    1,436.85/2,155.50 = 615.13/x
  3. Step 3: Cross multiply
    1,436.85x = 2,155.50 × 615.13
  4. Step 4: Simplify right side
    1,436.85x = 1,325,912.72
  5. Step 5: Solve for x
    x = 1,325,912.72/1,436.85
  6. Step 6: Final answer
    x = 922.79

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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.