Home / 2,189.20-3,281.71-727.33

Finding the Fourth Proportional to 2,189.20, 3,281.71 and 727.33

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Solution

The fourth proportional to 2,189.20, 3,281.71 and 727.33 is: 1,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.20 : 3,281.71 = 727.33 : x
  2. Step 2: Convert to fraction form
    2,189.20/3,281.71 = 727.33/x
  3. Step 3: Cross multiply
    2,189.20x = 3,281.71 × 727.33
  4. Step 4: Simplify right side
    2,189.20x = 2,386,886.13
  5. Step 5: Solve for x
    x = 2,386,886.13/2,189.20
  6. Step 6: Final answer
    x = 1,090.30

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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.