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Finding the Fourth Proportional to 8,812.49, 12,163.19 and 6,894.52

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Solution

The fourth proportional to 8,812.49, 12,163.19 and 6,894.52 is: 9,515.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.49 : 12,163.19 = 6,894.52 : x
  2. Step 2: Convert to fraction form
    8,812.49/12,163.19 = 6,894.52/x
  3. Step 3: Cross multiply
    8,812.49x = 12,163.19 × 6,894.52
  4. Step 4: Simplify right side
    8,812.49x = 83,859,291.84
  5. Step 5: Solve for x
    x = 83,859,291.84/8,812.49
  6. Step 6: Final answer
    x = 9,515.96

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1.5x scale

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.