Home / 2,581.62-3,871.45-1,099.91

Finding the Fourth Proportional to 2,581.62, 3,871.45 and 1,099.91

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Solution

The fourth proportional to 2,581.62, 3,871.45 and 1,099.91 is: 1,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.62 : 3,871.45 = 1,099.91 : x
  2. Step 2: Convert to fraction form
    2,581.62/3,871.45 = 1,099.91/x
  3. Step 3: Cross multiply
    2,581.62x = 3,871.45 × 1,099.91
  4. Step 4: Simplify right side
    2,581.62x = 4,258,246.57
  5. Step 5: Solve for x
    x = 4,258,246.57/2,581.62
  6. Step 6: Final answer
    x = 1,649.45

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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.