Home / 2,195.28-3,289.67-1,220.04

Finding the Fourth Proportional to 2,195.28, 3,289.67 and 1,220.04

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Solution

The fourth proportional to 2,195.28, 3,289.67 and 1,220.04 is: 1,828.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.28 : 3,289.67 = 1,220.04 : x
  2. Step 2: Convert to fraction form
    2,195.28/3,289.67 = 1,220.04/x
  3. Step 3: Cross multiply
    2,195.28x = 3,289.67 × 1,220.04
  4. Step 4: Simplify right side
    2,195.28x = 4,013,528.99
  5. Step 5: Solve for x
    x = 4,013,528.99/2,195.28
  6. Step 6: Final answer
    x = 1,828.25

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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.