Home / 2,220.80-3,325.80-2,123.60

Finding the Fourth Proportional to 2,220.80, 3,325.80 and 2,123.60

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Solution

The fourth proportional to 2,220.80, 3,325.80 and 2,123.60 is: 3,180.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.80 : 3,325.80 = 2,123.60 : x
  2. Step 2: Convert to fraction form
    2,220.80/3,325.80 = 2,123.60/x
  3. Step 3: Cross multiply
    2,220.80x = 3,325.80 × 2,123.60
  4. Step 4: Simplify right side
    2,220.80x = 7,062,668.88
  5. Step 5: Solve for x
    x = 7,062,668.88/2,220.80
  6. Step 6: Final answer
    x = 3,180.24

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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.