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Finding the Fourth Proportional to 5,517.30, 8,263.80 and 4,788.30

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Solution

The fourth proportional to 5,517.30, 8,263.80 and 4,788.30 is: 7,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.30 : 8,263.80 = 4,788.30 : x
  2. Step 2: Convert to fraction form
    5,517.30/8,263.80 = 4,788.30/x
  3. Step 3: Cross multiply
    5,517.30x = 8,263.80 × 4,788.30
  4. Step 4: Simplify right side
    5,517.30x = 39,569,553.54
  5. Step 5: Solve for x
    x = 39,569,553.54/5,517.30
  6. Step 6: Final answer
    x = 7,171.91

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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.