Home / 8,252.20-12,378.30-7,618.60

Finding the Fourth Proportional to 8,252.20, 12,378.30 and 7,618.60

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Solution

The fourth proportional to 8,252.20, 12,378.30 and 7,618.60 is: 11,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,252.20 : 12,378.30 = 7,618.60 : x
  2. Step 2: Convert to fraction form
    8,252.20/12,378.30 = 7,618.60/x
  3. Step 3: Cross multiply
    8,252.20x = 12,378.30 × 7,618.60
  4. Step 4: Simplify right side
    8,252.20x = 94,305,316.38
  5. Step 5: Solve for x
    x = 94,305,316.38/8,252.20
  6. Step 6: Final answer
    x = 11,427.90

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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.