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Finding the Fourth Proportional to 8,371.75, 12,557.63 and 2,215.75

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Solution

The fourth proportional to 8,371.75, 12,557.63 and 2,215.75 is: 3,323.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.75 : 12,557.63 = 2,215.75 : x
  2. Step 2: Convert to fraction form
    8,371.75/12,557.63 = 2,215.75/x
  3. Step 3: Cross multiply
    8,371.75x = 12,557.63 × 2,215.75
  4. Step 4: Simplify right side
    8,371.75x = 27,824,568.67
  5. Step 5: Solve for x
    x = 27,824,568.67/8,371.75
  6. Step 6: Final answer
    x = 3,323.63

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Similar ratio
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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.