Home / 2,638.66-3,956.53-1,079.76

Finding the Fourth Proportional to 2,638.66, 3,956.53 and 1,079.76

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Solution

The fourth proportional to 2,638.66, 3,956.53 and 1,079.76 is: 1,619.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.66 : 3,956.53 = 1,079.76 : x
  2. Step 2: Convert to fraction form
    2,638.66/3,956.53 = 1,079.76/x
  3. Step 3: Cross multiply
    2,638.66x = 3,956.53 × 1,079.76
  4. Step 4: Simplify right side
    2,638.66x = 4,272,104.18
  5. Step 5: Solve for x
    x = 4,272,104.18/2,638.66
  6. Step 6: Final answer
    x = 1,619.04

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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.