Home / 1,729.11-2,388.38-1,207.47

Finding the Fourth Proportional to 1,729.11, 2,388.38 and 1,207.47

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Solution

The fourth proportional to 1,729.11, 2,388.38 and 1,207.47 is: 1,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.11 : 2,388.38 = 1,207.47 : x
  2. Step 2: Convert to fraction form
    1,729.11/2,388.38 = 1,207.47/x
  3. Step 3: Cross multiply
    1,729.11x = 2,388.38 × 1,207.47
  4. Step 4: Simplify right side
    1,729.11x = 2,883,891.16
  5. Step 5: Solve for x
    x = 2,883,891.16/1,729.11
  6. Step 6: Final answer
    x = 1,667.85

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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.