Home / 3,711.81-5,122.96-2,219.90

Finding the Fourth Proportional to 3,711.81, 5,122.96 and 2,219.90

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Solution

The fourth proportional to 3,711.81, 5,122.96 and 2,219.90 is: 3,063.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.81 : 5,122.96 = 2,219.90 : x
  2. Step 2: Convert to fraction form
    3,711.81/5,122.96 = 2,219.90/x
  3. Step 3: Cross multiply
    3,711.81x = 5,122.96 × 2,219.90
  4. Step 4: Simplify right side
    3,711.81x = 11,372,440.23
  5. Step 5: Solve for x
    x = 11,372,440.23/3,711.81
  6. Step 6: Final answer
    x = 3,063.85

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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.