Home / 3,711.32-5,121.45-2,220.05

Finding the Fourth Proportional to 3,711.32, 5,121.45 and 2,220.05

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Solution

The fourth proportional to 3,711.32, 5,121.45 and 2,220.05 is: 3,063.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.32 : 5,121.45 = 2,220.05 : x
  2. Step 2: Convert to fraction form
    3,711.32/5,121.45 = 2,220.05/x
  3. Step 3: Cross multiply
    3,711.32x = 5,121.45 × 2,220.05
  4. Step 4: Simplify right side
    3,711.32x = 11,369,887.88
  5. Step 5: Solve for x
    x = 11,369,887.88/3,711.32
  6. Step 6: Final answer
    x = 3,063.57

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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.