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Finding the Fourth Proportional to 8,866, 12,230.76 and 7,099.84

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Solution

The fourth proportional to 8,866, 12,230.76 and 7,099.84 is: 9,794.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866 : 12,230.76 = 7,099.84 : x
  2. Step 2: Convert to fraction form
    8,866/12,230.76 = 7,099.84/x
  3. Step 3: Cross multiply
    8,866x = 12,230.76 × 7,099.84
  4. Step 4: Simplify right side
    8,866x = 86,836,439.08
  5. Step 5: Solve for x
    x = 86,836,439.08/8,866
  6. Step 6: Final answer
    x = 9,794.32

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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.