Home / 1,553.28-2,329.60-687.04

Finding the Fourth Proportional to 1,553.28, 2,329.60 and 687.04

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Solution

The fourth proportional to 1,553.28, 2,329.60 and 687.04 is: 1,030.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.28 : 2,329.60 = 687.04 : x
  2. Step 2: Convert to fraction form
    1,553.28/2,329.60 = 687.04/x
  3. Step 3: Cross multiply
    1,553.28x = 2,329.60 × 687.04
  4. Step 4: Simplify right side
    1,553.28x = 1,600,528.38
  5. Step 5: Solve for x
    x = 1,600,528.38/1,553.28
  6. Step 6: Final answer
    x = 1,030.42

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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.