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Finding the Fourth Proportional to 8,409.98, 12,616.46 and 3,476.86

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Solution

The fourth proportional to 8,409.98, 12,616.46 and 3,476.86 is: 5,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,409.98 : 12,616.46 = 3,476.86 : x
  2. Step 2: Convert to fraction form
    8,409.98/12,616.46 = 3,476.86/x
  3. Step 3: Cross multiply
    8,409.98x = 12,616.46 × 3,476.86
  4. Step 4: Simplify right side
    8,409.98x = 43,865,629.23
  5. Step 5: Solve for x
    x = 43,865,629.23/8,409.98
  6. Step 6: Final answer
    x = 5,215.90

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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.