Home / 3,712.74-5,123.35-2,119.57

Finding the Fourth Proportional to 3,712.74, 5,123.35 and 2,119.57

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Solution

The fourth proportional to 3,712.74, 5,123.35 and 2,119.57 is: 2,924.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.74 : 5,123.35 = 2,119.57 : x
  2. Step 2: Convert to fraction form
    3,712.74/5,123.35 = 2,119.57/x
  3. Step 3: Cross multiply
    3,712.74x = 5,123.35 × 2,119.57
  4. Step 4: Simplify right side
    3,712.74x = 10,859,288.80
  5. Step 5: Solve for x
    x = 10,859,288.80/3,712.74
  6. Step 6: Final answer
    x = 2,924.87

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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.