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Finding the Fourth Proportional to 8,558.97, 12,839.28 and 3,363.63

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Solution

The fourth proportional to 8,558.97, 12,839.28 and 3,363.63 is: 5,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.97 : 12,839.28 = 3,363.63 : x
  2. Step 2: Convert to fraction form
    8,558.97/12,839.28 = 3,363.63/x
  3. Step 3: Cross multiply
    8,558.97x = 12,839.28 × 3,363.63
  4. Step 4: Simplify right side
    8,558.97x = 43,186,587.39
  5. Step 5: Solve for x
    x = 43,186,587.39/8,558.97
  6. Step 6: Final answer
    x = 5,045.77

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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.