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Finding the Fourth Proportional to 6,394.29, 8,819.90 and 4,000.11

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Solution

The fourth proportional to 6,394.29, 8,819.90 and 4,000.11 is: 5,517.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,394.29 : 8,819.90 = 4,000.11 : x
  2. Step 2: Convert to fraction form
    6,394.29/8,819.90 = 4,000.11/x
  3. Step 3: Cross multiply
    6,394.29x = 8,819.90 × 4,000.11
  4. Step 4: Simplify right side
    6,394.29x = 35,280,517.11
  5. Step 5: Solve for x
    x = 35,280,517.11/6,394.29
  6. Step 6: Final answer
    x = 5,517.50

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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.