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Finding the Fourth Proportional to 8,851.74, 12,220.65 and 7,867.68

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Solution

The fourth proportional to 8,851.74, 12,220.65 and 7,867.68 is: 10,862.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,851.74 : 12,220.65 = 7,867.68 : x
  2. Step 2: Convert to fraction form
    8,851.74/12,220.65 = 7,867.68/x
  3. Step 3: Cross multiply
    8,851.74x = 12,220.65 × 7,867.68
  4. Step 4: Simplify right side
    8,851.74x = 96,148,163.59
  5. Step 5: Solve for x
    x = 96,148,163.59/8,851.74
  6. Step 6: Final answer
    x = 10,862.06

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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.