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Finding the Fourth Proportional to 8,857.79, 13,277.57 and 3,929.75

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Solution

The fourth proportional to 8,857.79, 13,277.57 and 3,929.75 is: 5,890.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.79 : 13,277.57 = 3,929.75 : x
  2. Step 2: Convert to fraction form
    8,857.79/13,277.57 = 3,929.75/x
  3. Step 3: Cross multiply
    8,857.79x = 13,277.57 × 3,929.75
  4. Step 4: Simplify right side
    8,857.79x = 52,177,530.71
  5. Step 5: Solve for x
    x = 52,177,530.71/8,857.79
  6. Step 6: Final answer
    x = 5,890.58

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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.