Home / 2,220.85-3,331.24-903.65

Finding the Fourth Proportional to 2,220.85, 3,331.24 and 903.65

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Solution

The fourth proportional to 2,220.85, 3,331.24 and 903.65 is: 1,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.85 : 3,331.24 = 903.65 : x
  2. Step 2: Convert to fraction form
    2,220.85/3,331.24 = 903.65/x
  3. Step 3: Cross multiply
    2,220.85x = 3,331.24 × 903.65
  4. Step 4: Simplify right side
    2,220.85x = 3,010,256.11
  5. Step 5: Solve for x
    x = 3,010,256.11/2,220.85
  6. Step 6: Final answer
    x = 1,355.45

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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.