Home / 1,179.12-1,767.13-659.10

Finding the Fourth Proportional to 1,179.12, 1,767.13 and 659.10

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Solution

The fourth proportional to 1,179.12, 1,767.13 and 659.10 is: 987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.12 : 1,767.13 = 659.10 : x
  2. Step 2: Convert to fraction form
    1,179.12/1,767.13 = 659.10/x
  3. Step 3: Cross multiply
    1,179.12x = 1,767.13 × 659.10
  4. Step 4: Simplify right side
    1,179.12x = 1,164,715.38
  5. Step 5: Solve for x
    x = 1,164,715.38/1,179.12
  6. Step 6: Final answer
    x = 987.78

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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.