Home / 3,712.75-5,123.15-2,119.41

Finding the Fourth Proportional to 3,712.75, 5,123.15 and 2,119.41

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Solution

The fourth proportional to 3,712.75, 5,123.15 and 2,119.41 is: 2,924.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.75 : 5,123.15 = 2,119.41 : x
  2. Step 2: Convert to fraction form
    3,712.75/5,123.15 = 2,119.41/x
  3. Step 3: Cross multiply
    3,712.75x = 5,123.15 × 2,119.41
  4. Step 4: Simplify right side
    3,712.75x = 10,858,055.34
  5. Step 5: Solve for x
    x = 10,858,055.34/3,712.75
  6. Step 6: Final answer
    x = 2,924.53

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Half scale
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Double scale
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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.