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Finding the Fourth Proportional to 1,381.41, 1,901.48 and 1,250.19

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Solution

The fourth proportional to 1,381.41, 1,901.48 and 1,250.19 is: 1,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.41 : 1,901.48 = 1,250.19 : x
  2. Step 2: Convert to fraction form
    1,381.41/1,901.48 = 1,250.19/x
  3. Step 3: Cross multiply
    1,381.41x = 1,901.48 × 1,250.19
  4. Step 4: Simplify right side
    1,381.41x = 2,377,205.03
  5. Step 5: Solve for x
    x = 2,377,205.03/1,381.41
  6. Step 6: Final answer
    x = 1,720.85

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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.