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Finding the Fourth Proportional to 1,742.67, 2,404.07 and 1,079.28

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Solution

The fourth proportional to 1,742.67, 2,404.07 and 1,079.28 is: 1,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.67 : 2,404.07 = 1,079.28 : x
  2. Step 2: Convert to fraction form
    1,742.67/2,404.07 = 1,079.28/x
  3. Step 3: Cross multiply
    1,742.67x = 2,404.07 × 1,079.28
  4. Step 4: Simplify right side
    1,742.67x = 2,594,647.25
  5. Step 5: Solve for x
    x = 2,594,647.25/1,742.67
  6. Step 6: Final answer
    x = 1,488.90

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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.