Home / 2,189.30-3,284.13-872.73

Finding the Fourth Proportional to 2,189.30, 3,284.13 and 872.73

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Solution

The fourth proportional to 2,189.30, 3,284.13 and 872.73 is: 1,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.30 : 3,284.13 = 872.73 : x
  2. Step 2: Convert to fraction form
    2,189.30/3,284.13 = 872.73/x
  3. Step 3: Cross multiply
    2,189.30x = 3,284.13 × 872.73
  4. Step 4: Simplify right side
    2,189.30x = 2,866,158.77
  5. Step 5: Solve for x
    x = 2,866,158.77/2,189.30
  6. Step 6: Final answer
    x = 1,309.17

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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.