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Finding the Fourth Proportional to 2,369.40, 3,553.92 and 638.04

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Solution

The fourth proportional to 2,369.40, 3,553.92 and 638.04 is: 957.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,369.40 : 3,553.92 = 638.04 : x
  2. Step 2: Convert to fraction form
    2,369.40/3,553.92 = 638.04/x
  3. Step 3: Cross multiply
    2,369.40x = 3,553.92 × 638.04
  4. Step 4: Simplify right side
    2,369.40x = 2,267,543.12
  5. Step 5: Solve for x
    x = 2,267,543.12/2,369.40
  6. Step 6: Final answer
    x = 957.01

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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.