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Finding the Fourth Proportional to 8,329.84, 12,433.98 and 7,278.88

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Solution

The fourth proportional to 8,329.84, 12,433.98 and 7,278.88 is: 10,865.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,329.84 : 12,433.98 = 7,278.88 : x
  2. Step 2: Convert to fraction form
    8,329.84/12,433.98 = 7,278.88/x
  3. Step 3: Cross multiply
    8,329.84x = 12,433.98 × 7,278.88
  4. Step 4: Simplify right side
    8,329.84x = 90,505,448.34
  5. Step 5: Solve for x
    x = 90,505,448.34/8,329.84
  6. Step 6: Final answer
    x = 10,865.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.