Home / 3,712.90-5,123.54-2,119.61

Finding the Fourth Proportional to 3,712.90, 5,123.54 and 2,119.61

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Solution

The fourth proportional to 3,712.90, 5,123.54 and 2,119.61 is: 2,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.90 : 5,123.54 = 2,119.61 : x
  2. Step 2: Convert to fraction form
    3,712.90/5,123.54 = 2,119.61/x
  3. Step 3: Cross multiply
    3,712.90x = 5,123.54 × 2,119.61
  4. Step 4: Simplify right side
    3,712.90x = 10,859,906.62
  5. Step 5: Solve for x
    x = 10,859,906.62/3,712.90
  6. Step 6: Final answer
    x = 2,924.91

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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.