Home / 1,553.23-2,143.14-1,257.97

Finding the Fourth Proportional to 1,553.23, 2,143.14 and 1,257.97

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Solution

The fourth proportional to 1,553.23, 2,143.14 and 1,257.97 is: 1,735.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.23 : 2,143.14 = 1,257.97 : x
  2. Step 2: Convert to fraction form
    1,553.23/2,143.14 = 1,257.97/x
  3. Step 3: Cross multiply
    1,553.23x = 2,143.14 × 1,257.97
  4. Step 4: Simplify right side
    1,553.23x = 2,696,005.83
  5. Step 5: Solve for x
    x = 2,696,005.83/1,553.23
  6. Step 6: Final answer
    x = 1,735.74

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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.