Home / 1,097.38-1,514.45-631.66

Finding the Fourth Proportional to 1,097.38, 1,514.45 and 631.66

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Solution

The fourth proportional to 1,097.38, 1,514.45 and 631.66 is: 871.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.38 : 1,514.45 = 631.66 : x
  2. Step 2: Convert to fraction form
    1,097.38/1,514.45 = 631.66/x
  3. Step 3: Cross multiply
    1,097.38x = 1,514.45 × 631.66
  4. Step 4: Simplify right side
    1,097.38x = 956,617.49
  5. Step 5: Solve for x
    x = 956,617.49/1,097.38
  6. Step 6: Final answer
    x = 871.73

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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.