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Finding the Fourth Proportional to 8,642.09, 12,959.87 and 2,797.13

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Solution

The fourth proportional to 8,642.09, 12,959.87 and 2,797.13 is: 4,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.09 : 12,959.87 = 2,797.13 : x
  2. Step 2: Convert to fraction form
    8,642.09/12,959.87 = 2,797.13/x
  3. Step 3: Cross multiply
    8,642.09x = 12,959.87 × 2,797.13
  4. Step 4: Simplify right side
    8,642.09x = 36,250,362.39
  5. Step 5: Solve for x
    x = 36,250,362.39/8,642.09
  6. Step 6: Final answer
    x = 4,194.63

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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.