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Finding the Fourth Proportional to 8,610.22, 12,920.19 and 3,679.48

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Solution

The fourth proportional to 8,610.22, 12,920.19 and 3,679.48 is: 5,521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.22 : 12,920.19 = 3,679.48 : x
  2. Step 2: Convert to fraction form
    8,610.22/12,920.19 = 3,679.48/x
  3. Step 3: Cross multiply
    8,610.22x = 12,920.19 × 3,679.48
  4. Step 4: Simplify right side
    8,610.22x = 47,539,580.70
  5. Step 5: Solve for x
    x = 47,539,580.70/8,610.22
  6. Step 6: Final answer
    x = 5,521.30

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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.