Home / 2,209.40-3,306.90-1,719.80

Finding the Fourth Proportional to 2,209.40, 3,306.90 and 1,719.80

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Solution

The fourth proportional to 2,209.40, 3,306.90 and 1,719.80 is: 2,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.40 : 3,306.90 = 1,719.80 : x
  2. Step 2: Convert to fraction form
    2,209.40/3,306.90 = 1,719.80/x
  3. Step 3: Cross multiply
    2,209.40x = 3,306.90 × 1,719.80
  4. Step 4: Simplify right side
    2,209.40x = 5,687,206.62
  5. Step 5: Solve for x
    x = 5,687,206.62/2,209.40
  6. Step 6: Final answer
    x = 2,574.10

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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.