Home / 2,119.30-3,179.08-886.85

Finding the Fourth Proportional to 2,119.30, 3,179.08 and 886.85

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Solution

The fourth proportional to 2,119.30, 3,179.08 and 886.85 is: 1,330.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.30 : 3,179.08 = 886.85 : x
  2. Step 2: Convert to fraction form
    2,119.30/3,179.08 = 886.85/x
  3. Step 3: Cross multiply
    2,119.30x = 3,179.08 × 886.85
  4. Step 4: Simplify right side
    2,119.30x = 2,819,364.23
  5. Step 5: Solve for x
    x = 2,819,364.23/2,119.30
  6. Step 6: Final answer
    x = 1,330.33

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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.