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Finding the Fourth Proportional to 8,851.68, 12,215.22 and 4,872.71

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Solution

The fourth proportional to 8,851.68, 12,215.22 and 4,872.71 is: 6,724.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,851.68 : 12,215.22 = 4,872.71 : x
  2. Step 2: Convert to fraction form
    8,851.68/12,215.22 = 4,872.71/x
  3. Step 3: Cross multiply
    8,851.68x = 12,215.22 × 4,872.71
  4. Step 4: Simplify right side
    8,851.68x = 59,521,163.57
  5. Step 5: Solve for x
    x = 59,521,163.57/8,851.68
  6. Step 6: Final answer
    x = 6,724.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.