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Finding the Fourth Proportional to 8,619.80, 12,925.62 and 3,073.05

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Solution

The fourth proportional to 8,619.80, 12,925.62 and 3,073.05 is: 4,608.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.80 : 12,925.62 = 3,073.05 : x
  2. Step 2: Convert to fraction form
    8,619.80/12,925.62 = 3,073.05/x
  3. Step 3: Cross multiply
    8,619.80x = 12,925.62 × 3,073.05
  4. Step 4: Simplify right side
    8,619.80x = 39,721,076.54
  5. Step 5: Solve for x
    x = 39,721,076.54/8,619.80
  6. Step 6: Final answer
    x = 4,608.12

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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.