Home / 3,711.01-5,119.45-2,138.19

Finding the Fourth Proportional to 3,711.01, 5,119.45 and 2,138.19

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Solution

The fourth proportional to 3,711.01, 5,119.45 and 2,138.19 is: 2,949.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.01 : 5,119.45 = 2,138.19 : x
  2. Step 2: Convert to fraction form
    3,711.01/5,119.45 = 2,138.19/x
  3. Step 3: Cross multiply
    3,711.01x = 5,119.45 × 2,138.19
  4. Step 4: Simplify right side
    3,711.01x = 10,946,356.80
  5. Step 5: Solve for x
    x = 10,946,356.80/3,711.01
  6. Step 6: Final answer
    x = 2,949.70

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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.