Home / 2,672.14-3,687.45-1,553.07

Finding the Fourth Proportional to 2,672.14, 3,687.45 and 1,553.07

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Solution

The fourth proportional to 2,672.14, 3,687.45 and 1,553.07 is: 2,143.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.14 : 3,687.45 = 1,553.07 : x
  2. Step 2: Convert to fraction form
    2,672.14/3,687.45 = 1,553.07/x
  3. Step 3: Cross multiply
    2,672.14x = 3,687.45 × 1,553.07
  4. Step 4: Simplify right side
    2,672.14x = 5,726,860.21
  5. Step 5: Solve for x
    x = 5,726,860.21/2,672.14
  6. Step 6: Final answer
    x = 2,143.17

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1.5x scale

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.