Home / 3,081.38-4,252.91-1,755

Finding the Fourth Proportional to 3,081.38, 4,252.91 and 1,755

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Solution

The fourth proportional to 3,081.38, 4,252.91 and 1,755 is: 2,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.38 : 4,252.91 = 1,755 : x
  2. Step 2: Convert to fraction form
    3,081.38/4,252.91 = 1,755/x
  3. Step 3: Cross multiply
    3,081.38x = 4,252.91 × 1,755
  4. Step 4: Simplify right side
    3,081.38x = 7,463,848.28
  5. Step 5: Solve for x
    x = 7,463,848.28/3,081.38
  6. Step 6: Final answer
    x = 2,422.25

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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.