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Finding the Fourth Proportional to 2,165, 2,988.24 and 1,234.04

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Solution

The fourth proportional to 2,165, 2,988.24 and 1,234.04 is: 1,703.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165 : 2,988.24 = 1,234.04 : x
  2. Step 2: Convert to fraction form
    2,165/2,988.24 = 1,234.04/x
  3. Step 3: Cross multiply
    2,165x = 2,988.24 × 1,234.04
  4. Step 4: Simplify right side
    2,165x = 3,687,607.69
  5. Step 5: Solve for x
    x = 3,687,607.69/2,165
  6. Step 6: Final answer
    x = 1,703.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.