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Finding the Fourth Proportional to 3,158.25, 4,358.52 and 1,761

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Solution

The fourth proportional to 3,158.25, 4,358.52 and 1,761 is: 2,430.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.25 : 4,358.52 = 1,761 : x
  2. Step 2: Convert to fraction form
    3,158.25/4,358.52 = 1,761/x
  3. Step 3: Cross multiply
    3,158.25x = 4,358.52 × 1,761
  4. Step 4: Simplify right side
    3,158.25x = 7,675,353.72
  5. Step 5: Solve for x
    x = 7,675,353.72/3,158.25
  6. Step 6: Final answer
    x = 2,430.26

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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.