Home / 2,581.44-3,869.40-2,215.11

Finding the Fourth Proportional to 2,581.44, 3,869.40 and 2,215.11

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Solution

The fourth proportional to 2,581.44, 3,869.40 and 2,215.11 is: 3,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.44 : 3,869.40 = 2,215.11 : x
  2. Step 2: Convert to fraction form
    2,581.44/3,869.40 = 2,215.11/x
  3. Step 3: Cross multiply
    2,581.44x = 3,869.40 × 2,215.11
  4. Step 4: Simplify right side
    2,581.44x = 8,571,146.63
  5. Step 5: Solve for x
    x = 8,571,146.63/2,581.44
  6. Step 6: Final answer
    x = 3,320.30

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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.