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Finding the Fourth Proportional to 8,821.80, 12,174.15 and 4,843.28

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Solution

The fourth proportional to 8,821.80, 12,174.15 and 4,843.28 is: 6,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.80 : 12,174.15 = 4,843.28 : x
  2. Step 2: Convert to fraction form
    8,821.80/12,174.15 = 4,843.28/x
  3. Step 3: Cross multiply
    8,821.80x = 12,174.15 × 4,843.28
  4. Step 4: Simplify right side
    8,821.80x = 58,962,756.34
  5. Step 5: Solve for x
    x = 58,962,756.34/8,821.80
  6. Step 6: Final answer
    x = 6,683.76

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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.