Home / 7,972.83-11,959.24-2,129.28

Finding the Fourth Proportional to 7,972.83, 11,959.24 and 2,129.28

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Solution

The fourth proportional to 7,972.83, 11,959.24 and 2,129.28 is: 3,193.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.83 : 11,959.24 = 2,129.28 : x
  2. Step 2: Convert to fraction form
    7,972.83/11,959.24 = 2,129.28/x
  3. Step 3: Cross multiply
    7,972.83x = 11,959.24 × 2,129.28
  4. Step 4: Simplify right side
    7,972.83x = 25,464,559.90
  5. Step 5: Solve for x
    x = 25,464,559.90/7,972.83
  6. Step 6: Final answer
    x = 3,193.92

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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.