Home / 2,121.55-3,179.08-888.29

Finding the Fourth Proportional to 2,121.55, 3,179.08 and 888.29

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Solution

The fourth proportional to 2,121.55, 3,179.08 and 888.29 is: 1,331.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.55 : 3,179.08 = 888.29 : x
  2. Step 2: Convert to fraction form
    2,121.55/3,179.08 = 888.29/x
  3. Step 3: Cross multiply
    2,121.55x = 3,179.08 × 888.29
  4. Step 4: Simplify right side
    2,121.55x = 2,823,951.05
  5. Step 5: Solve for x
    x = 2,823,951.05/2,121.55
  6. Step 6: Final answer
    x = 1,331.08

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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.