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Finding the Fourth Proportional to 8,659.71, 12,992.67 and 2,816.33

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Solution

The fourth proportional to 8,659.71, 12,992.67 and 2,816.33 is: 4,225.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.71 : 12,992.67 = 2,816.33 : x
  2. Step 2: Convert to fraction form
    8,659.71/12,992.67 = 2,816.33/x
  3. Step 3: Cross multiply
    8,659.71x = 12,992.67 × 2,816.33
  4. Step 4: Simplify right side
    8,659.71x = 36,591,581.34
  5. Step 5: Solve for x
    x = 36,591,581.34/8,659.71
  6. Step 6: Final answer
    x = 4,225.50

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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.