Home / 2,877-3,972.12-2,212.56

Finding the Fourth Proportional to 2,877, 3,972.12 and 2,212.56

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Solution

The fourth proportional to 2,877, 3,972.12 and 2,212.56 is: 3,054.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877 : 3,972.12 = 2,212.56 : x
  2. Step 2: Convert to fraction form
    2,877/3,972.12 = 2,212.56/x
  3. Step 3: Cross multiply
    2,877x = 3,972.12 × 2,212.56
  4. Step 4: Simplify right side
    2,877x = 8,788,553.83
  5. Step 5: Solve for x
    x = 8,788,553.83/2,877
  6. Step 6: Final answer
    x = 3,054.76

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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.