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Finding the Fourth Proportional to 8,936.64, 12,332.55 and 4,958.55

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Solution

The fourth proportional to 8,936.64, 12,332.55 and 4,958.55 is: 6,842.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.64 : 12,332.55 = 4,958.55 : x
  2. Step 2: Convert to fraction form
    8,936.64/12,332.55 = 4,958.55/x
  3. Step 3: Cross multiply
    8,936.64x = 12,332.55 × 4,958.55
  4. Step 4: Simplify right side
    8,936.64x = 61,151,565.80
  5. Step 5: Solve for x
    x = 61,151,565.80/8,936.64
  6. Step 6: Final answer
    x = 6,842.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.