Home / 2,718.35-4,077.32-869.66

Finding the Fourth Proportional to 2,718.35, 4,077.32 and 869.66

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Solution

The fourth proportional to 2,718.35, 4,077.32 and 869.66 is: 1,304.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.35 : 4,077.32 = 869.66 : x
  2. Step 2: Convert to fraction form
    2,718.35/4,077.32 = 869.66/x
  3. Step 3: Cross multiply
    2,718.35x = 4,077.32 × 869.66
  4. Step 4: Simplify right side
    2,718.35x = 3,545,882.11
  5. Step 5: Solve for x
    x = 3,545,882.11/2,718.35
  6. Step 6: Final answer
    x = 1,304.42

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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.