Home / 7,972.36-11,957.60-2,129.42

Finding the Fourth Proportional to 7,972.36, 11,957.60 and 2,129.42

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Solution

The fourth proportional to 7,972.36, 11,957.60 and 2,129.42 is: 3,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.36 : 11,957.60 = 2,129.42 : x
  2. Step 2: Convert to fraction form
    7,972.36/11,957.60 = 2,129.42/x
  3. Step 3: Cross multiply
    7,972.36x = 11,957.60 × 2,129.42
  4. Step 4: Simplify right side
    7,972.36x = 25,462,787.81
  5. Step 5: Solve for x
    x = 25,462,787.81/7,972.36
  6. Step 6: Final answer
    x = 3,193.88

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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.