Home / 1,436.53-2,153.23-615.30

Finding the Fourth Proportional to 1,436.53, 2,153.23 and 615.30

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Solution

The fourth proportional to 1,436.53, 2,153.23 and 615.30 is: 922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.53 : 2,153.23 = 615.30 : x
  2. Step 2: Convert to fraction form
    1,436.53/2,153.23 = 615.30/x
  3. Step 3: Cross multiply
    1,436.53x = 2,153.23 × 615.30
  4. Step 4: Simplify right side
    1,436.53x = 1,324,882.42
  5. Step 5: Solve for x
    x = 1,324,882.42/1,436.53
  6. Step 6: Final answer
    x = 922.28

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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.