Home / 2,220.16-3,331.52-2,179.20

Finding the Fourth Proportional to 2,220.16, 3,331.52 and 2,179.20

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Solution

The fourth proportional to 2,220.16, 3,331.52 and 2,179.20 is: 3,270.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.16 : 3,331.52 = 2,179.20 : x
  2. Step 2: Convert to fraction form
    2,220.16/3,331.52 = 2,179.20/x
  3. Step 3: Cross multiply
    2,220.16x = 3,331.52 × 2,179.20
  4. Step 4: Simplify right side
    2,220.16x = 7,260,048.38
  5. Step 5: Solve for x
    x = 7,260,048.38/2,220.16
  6. Step 6: Final answer
    x = 3,270.06

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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.