Home / 2,188.09-3,281.73-726.85

Finding the Fourth Proportional to 2,188.09, 3,281.73 and 726.85

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Solution

The fourth proportional to 2,188.09, 3,281.73 and 726.85 is: 1,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.09 : 3,281.73 = 726.85 : x
  2. Step 2: Convert to fraction form
    2,188.09/3,281.73 = 726.85/x
  3. Step 3: Cross multiply
    2,188.09x = 3,281.73 × 726.85
  4. Step 4: Simplify right side
    2,188.09x = 2,385,330.92
  5. Step 5: Solve for x
    x = 2,385,330.92/2,188.09
  6. Step 6: Final answer
    x = 1,090.14

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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.