Home / 2,672.28-3,689.01-1,788.66

Finding the Fourth Proportional to 2,672.28, 3,689.01 and 1,788.66

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Solution

The fourth proportional to 2,672.28, 3,689.01 and 1,788.66 is: 2,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.28 : 3,689.01 = 1,788.66 : x
  2. Step 2: Convert to fraction form
    2,672.28/3,689.01 = 1,788.66/x
  3. Step 3: Cross multiply
    2,672.28x = 3,689.01 × 1,788.66
  4. Step 4: Simplify right side
    2,672.28x = 6,598,384.63
  5. Step 5: Solve for x
    x = 6,598,384.63/2,672.28
  6. Step 6: Final answer
    x = 2,469.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.