Home / 3,869.85-5,340.58-2,191.04

Finding the Fourth Proportional to 3,869.85, 5,340.58 and 2,191.04

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Solution

The fourth proportional to 3,869.85, 5,340.58 and 2,191.04 is: 3,023.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.85 : 5,340.58 = 2,191.04 : x
  2. Step 2: Convert to fraction form
    3,869.85/5,340.58 = 2,191.04/x
  3. Step 3: Cross multiply
    3,869.85x = 5,340.58 × 2,191.04
  4. Step 4: Simplify right side
    3,869.85x = 11,701,412.25
  5. Step 5: Solve for x
    x = 11,701,412.25/3,869.85
  6. Step 6: Final answer
    x = 3,023.74

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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.