Home / 3,712.45-5,123.87-2,119.09

Finding the Fourth Proportional to 3,712.45, 5,123.87 and 2,119.09

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Solution

The fourth proportional to 3,712.45, 5,123.87 and 2,119.09 is: 2,924.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.45 : 5,123.87 = 2,119.09 : x
  2. Step 2: Convert to fraction form
    3,712.45/5,123.87 = 2,119.09/x
  3. Step 3: Cross multiply
    3,712.45x = 5,123.87 × 2,119.09
  4. Step 4: Simplify right side
    3,712.45x = 10,857,931.08
  5. Step 5: Solve for x
    x = 10,857,931.08/3,712.45
  6. Step 6: Final answer
    x = 2,924.73

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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.