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Finding the Fourth Proportional to 8,812.65, 13,218.90 and 2,238.75

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Solution

The fourth proportional to 8,812.65, 13,218.90 and 2,238.75 is: 3,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.65 : 13,218.90 = 2,238.75 : x
  2. Step 2: Convert to fraction form
    8,812.65/13,218.90 = 2,238.75/x
  3. Step 3: Cross multiply
    8,812.65x = 13,218.90 × 2,238.75
  4. Step 4: Simplify right side
    8,812.65x = 29,593,812.38
  5. Step 5: Solve for x
    x = 29,593,812.38/8,812.65
  6. Step 6: Final answer
    x = 3,358.11

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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.