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Finding the Fourth Proportional to 8,821.66, 13,237.64 and 3,278.84

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Solution

The fourth proportional to 8,821.66, 13,237.64 and 3,278.84 is: 4,920.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.66 : 13,237.64 = 3,278.84 : x
  2. Step 2: Convert to fraction form
    8,821.66/13,237.64 = 3,278.84/x
  3. Step 3: Cross multiply
    8,821.66x = 13,237.64 × 3,278.84
  4. Step 4: Simplify right side
    8,821.66x = 43,404,103.54
  5. Step 5: Solve for x
    x = 43,404,103.54/8,821.66
  6. Step 6: Final answer
    x = 4,920.17

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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.