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Finding the Fourth Proportional to 3,119.52, 4,305.20 and 1,722.52

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Solution

The fourth proportional to 3,119.52, 4,305.20 and 1,722.52 is: 2,377.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.52 : 4,305.20 = 1,722.52 : x
  2. Step 2: Convert to fraction form
    3,119.52/4,305.20 = 1,722.52/x
  3. Step 3: Cross multiply
    3,119.52x = 4,305.20 × 1,722.52
  4. Step 4: Simplify right side
    3,119.52x = 7,415,793.10
  5. Step 5: Solve for x
    x = 7,415,793.10/3,119.52
  6. Step 6: Final answer
    x = 2,377.22

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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.