Home / 8,127.79-12,193.52-2,581.32

Finding the Fourth Proportional to 8,127.79, 12,193.52 and 2,581.32

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Solution

The fourth proportional to 8,127.79, 12,193.52 and 2,581.32 is: 3,872.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.79 : 12,193.52 = 2,581.32 : x
  2. Step 2: Convert to fraction form
    8,127.79/12,193.52 = 2,581.32/x
  3. Step 3: Cross multiply
    8,127.79x = 12,193.52 × 2,581.32
  4. Step 4: Simplify right side
    8,127.79x = 31,475,377.05
  5. Step 5: Solve for x
    x = 31,475,377.05/8,127.79
  6. Step 6: Final answer
    x = 3,872.56

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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.