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Finding the Fourth Proportional to 6,868.85, 9,478.76 and 3,884.04

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Solution

The fourth proportional to 6,868.85, 9,478.76 and 3,884.04 is: 5,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,868.85 : 9,478.76 = 3,884.04 : x
  2. Step 2: Convert to fraction form
    6,868.85/9,478.76 = 3,884.04/x
  3. Step 3: Cross multiply
    6,868.85x = 9,478.76 × 3,884.04
  4. Step 4: Simplify right side
    6,868.85x = 36,815,863.57
  5. Step 5: Solve for x
    x = 36,815,863.57/6,868.85
  6. Step 6: Final answer
    x = 5,359.83

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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.