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Finding the Fourth Proportional to 8,310.40, 12,466.20 and 5,016.40

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Solution

The fourth proportional to 8,310.40, 12,466.20 and 5,016.40 is: 7,524.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,310.40 : 12,466.20 = 5,016.40 : x
  2. Step 2: Convert to fraction form
    8,310.40/12,466.20 = 5,016.40/x
  3. Step 3: Cross multiply
    8,310.40x = 12,466.20 × 5,016.40
  4. Step 4: Simplify right side
    8,310.40x = 62,535,445.68
  5. Step 5: Solve for x
    x = 62,535,445.68/8,310.40
  6. Step 6: Final answer
    x = 7,524.96

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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.