Home / 1,691.67-2,538.35-1,142.65

Finding the Fourth Proportional to 1,691.67, 2,538.35 and 1,142.65

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Solution

The fourth proportional to 1,691.67, 2,538.35 and 1,142.65 is: 1,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.67 : 2,538.35 = 1,142.65 : x
  2. Step 2: Convert to fraction form
    1,691.67/2,538.35 = 1,142.65/x
  3. Step 3: Cross multiply
    1,691.67x = 2,538.35 × 1,142.65
  4. Step 4: Simplify right side
    1,691.67x = 2,900,445.63
  5. Step 5: Solve for x
    x = 2,900,445.63/1,691.67
  6. Step 6: Final answer
    x = 1,714.55

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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.