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Finding the Fourth Proportional to 1,312.97, 1,967.14 and 1,169.97

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Solution

The fourth proportional to 1,312.97, 1,967.14 and 1,169.97 is: 1,752.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.97 : 1,967.14 = 1,169.97 : x
  2. Step 2: Convert to fraction form
    1,312.97/1,967.14 = 1,169.97/x
  3. Step 3: Cross multiply
    1,312.97x = 1,967.14 × 1,169.97
  4. Step 4: Simplify right side
    1,312.97x = 2,301,487.82
  5. Step 5: Solve for x
    x = 2,301,487.82/1,312.97
  6. Step 6: Final answer
    x = 1,752.88

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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.