Home / 3,712.14-5,122.08-2,118.78

Finding the Fourth Proportional to 3,712.14, 5,122.08 and 2,118.78

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Solution

The fourth proportional to 3,712.14, 5,122.08 and 2,118.78 is: 2,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.14 : 5,122.08 = 2,118.78 : x
  2. Step 2: Convert to fraction form
    3,712.14/5,122.08 = 2,118.78/x
  3. Step 3: Cross multiply
    3,712.14x = 5,122.08 × 2,118.78
  4. Step 4: Simplify right side
    3,712.14x = 10,852,560.66
  5. Step 5: Solve for x
    x = 10,852,560.66/3,712.14
  6. Step 6: Final answer
    x = 2,923.53

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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.