Home / 2,209.41-3,319.11-1,287.18

Finding the Fourth Proportional to 2,209.41, 3,319.11 and 1,287.18

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Solution

The fourth proportional to 2,209.41, 3,319.11 and 1,287.18 is: 1,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.41 : 3,319.11 = 1,287.18 : x
  2. Step 2: Convert to fraction form
    2,209.41/3,319.11 = 1,287.18/x
  3. Step 3: Cross multiply
    2,209.41x = 3,319.11 × 1,287.18
  4. Step 4: Simplify right side
    2,209.41x = 4,272,292.01
  5. Step 5: Solve for x
    x = 4,272,292.01/2,209.41
  6. Step 6: Final answer
    x = 1,933.68

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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.