Home / 2,220.16-3,331.20-2,148.80

Finding the Fourth Proportional to 2,220.16, 3,331.20 and 2,148.80

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Solution

The fourth proportional to 2,220.16, 3,331.20 and 2,148.80 is: 3,224.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.16 : 3,331.20 = 2,148.80 : x
  2. Step 2: Convert to fraction form
    2,220.16/3,331.20 = 2,148.80/x
  3. Step 3: Cross multiply
    2,220.16x = 3,331.20 × 2,148.80
  4. Step 4: Simplify right side
    2,220.16x = 7,158,082.56
  5. Step 5: Solve for x
    x = 7,158,082.56/2,220.16
  6. Step 6: Final answer
    x = 3,224.13

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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.