Home / 2,220.85-3,325.57-2,155.15

Finding the Fourth Proportional to 2,220.85, 3,325.57 and 2,155.15

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Solution

The fourth proportional to 2,220.85, 3,325.57 and 2,155.15 is: 3,227.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.85 : 3,325.57 = 2,155.15 : x
  2. Step 2: Convert to fraction form
    2,220.85/3,325.57 = 2,155.15/x
  3. Step 3: Cross multiply
    2,220.85x = 3,325.57 × 2,155.15
  4. Step 4: Simplify right side
    2,220.85x = 7,167,102.19
  5. Step 5: Solve for x
    x = 7,167,102.19/2,220.85
  6. Step 6: Final answer
    x = 3,227.19

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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.