Home / 2,672.30-3,688.11-1,553.82

Finding the Fourth Proportional to 2,672.30, 3,688.11 and 1,553.82

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Solution

The fourth proportional to 2,672.30, 3,688.11 and 1,553.82 is: 2,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.30 : 3,688.11 = 1,553.82 : x
  2. Step 2: Convert to fraction form
    2,672.30/3,688.11 = 1,553.82/x
  3. Step 3: Cross multiply
    2,672.30x = 3,688.11 × 1,553.82
  4. Step 4: Simplify right side
    2,672.30x = 5,730,659.08
  5. Step 5: Solve for x
    x = 5,730,659.08/2,672.30
  6. Step 6: Final answer
    x = 2,144.47

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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.