Home / 2,189.12-3,280.92-1,926.68

Finding the Fourth Proportional to 2,189.12, 3,280.92 and 1,926.68

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Solution

The fourth proportional to 2,189.12, 3,280.92 and 1,926.68 is: 2,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.12 : 3,280.92 = 1,926.68 : x
  2. Step 2: Convert to fraction form
    2,189.12/3,280.92 = 1,926.68/x
  3. Step 3: Cross multiply
    2,189.12x = 3,280.92 × 1,926.68
  4. Step 4: Simplify right side
    2,189.12x = 6,321,266.54
  5. Step 5: Solve for x
    x = 6,321,266.54/2,189.12
  6. Step 6: Final answer
    x = 2,887.59

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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.