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Finding the Fourth Proportional to 8,440.40, 12,662.40 and 3,246.24

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Solution

The fourth proportional to 8,440.40, 12,662.40 and 3,246.24 is: 4,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.40 : 12,662.40 = 3,246.24 : x
  2. Step 2: Convert to fraction form
    8,440.40/12,662.40 = 3,246.24/x
  3. Step 3: Cross multiply
    8,440.40x = 12,662.40 × 3,246.24
  4. Step 4: Simplify right side
    8,440.40x = 41,105,189.38
  5. Step 5: Solve for x
    x = 41,105,189.38/8,440.40
  6. Step 6: Final answer
    x = 4,870.05

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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.