Home / 3,081.78-4,253.65-1,902.17

Finding the Fourth Proportional to 3,081.78, 4,253.65 and 1,902.17

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Solution

The fourth proportional to 3,081.78, 4,253.65 and 1,902.17 is: 2,625.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.78 : 4,253.65 = 1,902.17 : x
  2. Step 2: Convert to fraction form
    3,081.78/4,253.65 = 1,902.17/x
  3. Step 3: Cross multiply
    3,081.78x = 4,253.65 × 1,902.17
  4. Step 4: Simplify right side
    3,081.78x = 8,091,171.30
  5. Step 5: Solve for x
    x = 8,091,171.30/3,081.78
  6. Step 6: Final answer
    x = 2,625.49

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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.