Home / 5,129.12-7,691.76-1,841.36

Finding the Fourth Proportional to 5,129.12, 7,691.76 and 1,841.36

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Solution

The fourth proportional to 5,129.12, 7,691.76 and 1,841.36 is: 2,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.12 : 7,691.76 = 1,841.36 : x
  2. Step 2: Convert to fraction form
    5,129.12/7,691.76 = 1,841.36/x
  3. Step 3: Cross multiply
    5,129.12x = 7,691.76 × 1,841.36
  4. Step 4: Simplify right side
    5,129.12x = 14,163,299.19
  5. Step 5: Solve for x
    x = 14,163,299.19/5,129.12
  6. Step 6: Final answer
    x = 2,761.35

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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.