Home / 2,672.10-3,687.98-1,553.40

Finding the Fourth Proportional to 2,672.10, 3,687.98 and 1,553.40

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Solution

The fourth proportional to 2,672.10, 3,687.98 and 1,553.40 is: 2,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.10 : 3,687.98 = 1,553.40 : x
  2. Step 2: Convert to fraction form
    2,672.10/3,687.98 = 1,553.40/x
  3. Step 3: Cross multiply
    2,672.10x = 3,687.98 × 1,553.40
  4. Step 4: Simplify right side
    2,672.10x = 5,728,908.13
  5. Step 5: Solve for x
    x = 5,728,908.13/2,672.10
  6. Step 6: Final answer
    x = 2,143.97

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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.