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Finding the Fourth Proportional to 8,641.35, 12,959.24 and 2,796.57

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Solution

The fourth proportional to 8,641.35, 12,959.24 and 2,796.57 is: 4,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.35 : 12,959.24 = 2,796.57 : x
  2. Step 2: Convert to fraction form
    8,641.35/12,959.24 = 2,796.57/x
  3. Step 3: Cross multiply
    8,641.35x = 12,959.24 × 2,796.57
  4. Step 4: Simplify right side
    8,641.35x = 36,241,407.82
  5. Step 5: Solve for x
    x = 36,241,407.82/8,641.35
  6. Step 6: Final answer
    x = 4,193.95

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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.