Home / 2,987.76-4,472.40-2,732.61

Finding the Fourth Proportional to 2,987.76, 4,472.40 and 2,732.61

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Solution

The fourth proportional to 2,987.76, 4,472.40 and 2,732.61 is: 4,090.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.76 : 4,472.40 = 2,732.61 : x
  2. Step 2: Convert to fraction form
    2,987.76/4,472.40 = 2,732.61/x
  3. Step 3: Cross multiply
    2,987.76x = 4,472.40 × 2,732.61
  4. Step 4: Simplify right side
    2,987.76x = 12,221,324.96
  5. Step 5: Solve for x
    x = 12,221,324.96/2,987.76
  6. Step 6: Final answer
    x = 4,090.46

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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.