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Finding the Fourth Proportional to 1,778, 2,451.24 and 1,253.12

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Solution

The fourth proportional to 1,778, 2,451.24 and 1,253.12 is: 1,727.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778 : 2,451.24 = 1,253.12 : x
  2. Step 2: Convert to fraction form
    1,778/2,451.24 = 1,253.12/x
  3. Step 3: Cross multiply
    1,778x = 2,451.24 × 1,253.12
  4. Step 4: Simplify right side
    1,778x = 3,071,697.87
  5. Step 5: Solve for x
    x = 3,071,697.87/1,778
  6. Step 6: Final answer
    x = 1,727.61

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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.