Home / 2,141.13-3,211.70-908.36

Finding the Fourth Proportional to 2,141.13, 3,211.70 and 908.36

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Solution

The fourth proportional to 2,141.13, 3,211.70 and 908.36 is: 1,362.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.13 : 3,211.70 = 908.36 : x
  2. Step 2: Convert to fraction form
    2,141.13/3,211.70 = 908.36/x
  3. Step 3: Cross multiply
    2,141.13x = 3,211.70 × 908.36
  4. Step 4: Simplify right side
    2,141.13x = 2,917,394.43
  5. Step 5: Solve for x
    x = 2,917,394.43/2,141.13
  6. Step 6: Final answer
    x = 1,362.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.