Home / 3,142.85-4,715.04-2,220.21

Finding the Fourth Proportional to 3,142.85, 4,715.04 and 2,220.21

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Solution

The fourth proportional to 3,142.85, 4,715.04 and 2,220.21 is: 3,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.85 : 4,715.04 = 2,220.21 : x
  2. Step 2: Convert to fraction form
    3,142.85/4,715.04 = 2,220.21/x
  3. Step 3: Cross multiply
    3,142.85x = 4,715.04 × 2,220.21
  4. Step 4: Simplify right side
    3,142.85x = 10,468,378.96
  5. Step 5: Solve for x
    x = 10,468,378.96/3,142.85
  6. Step 6: Final answer
    x = 3,330.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.