Home / 2,620.49-3,932.78-1,581.66

Finding the Fourth Proportional to 2,620.49, 3,932.78 and 1,581.66

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Solution

The fourth proportional to 2,620.49, 3,932.78 and 1,581.66 is: 2,373.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.49 : 3,932.78 = 1,581.66 : x
  2. Step 2: Convert to fraction form
    2,620.49/3,932.78 = 1,581.66/x
  3. Step 3: Cross multiply
    2,620.49x = 3,932.78 × 1,581.66
  4. Step 4: Simplify right side
    2,620.49x = 6,220,312.91
  5. Step 5: Solve for x
    x = 6,220,312.91/2,620.49
  6. Step 6: Final answer
    x = 2,373.73

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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.