Home / 1,553.97-2,144.19-1,258.72

Finding the Fourth Proportional to 1,553.97, 2,144.19 and 1,258.72

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Solution

The fourth proportional to 1,553.97, 2,144.19 and 1,258.72 is: 1,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.97 : 2,144.19 = 1,258.72 : x
  2. Step 2: Convert to fraction form
    1,553.97/2,144.19 = 1,258.72/x
  3. Step 3: Cross multiply
    1,553.97x = 2,144.19 × 1,258.72
  4. Step 4: Simplify right side
    1,553.97x = 2,698,934.84
  5. Step 5: Solve for x
    x = 2,698,934.84/1,553.97
  6. Step 6: Final answer
    x = 1,736.80

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Double scale
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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.