Home / 3,869.50-5,339.83-2,191.23

Finding the Fourth Proportional to 3,869.50, 5,339.83 and 2,191.23

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Solution

The fourth proportional to 3,869.50, 5,339.83 and 2,191.23 is: 3,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.50 : 5,339.83 = 2,191.23 : x
  2. Step 2: Convert to fraction form
    3,869.50/5,339.83 = 2,191.23/x
  3. Step 3: Cross multiply
    3,869.50x = 5,339.83 × 2,191.23
  4. Step 4: Simplify right side
    3,869.50x = 11,700,795.69
  5. Step 5: Solve for x
    x = 11,700,795.69/3,869.50
  6. Step 6: Final answer
    x = 3,023.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.