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Finding the Fourth Proportional to 8,821.68, 12,174.08 and 4,843.18

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Solution

The fourth proportional to 8,821.68, 12,174.08 and 4,843.18 is: 6,683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.68 : 12,174.08 = 4,843.18 : x
  2. Step 2: Convert to fraction form
    8,821.68/12,174.08 = 4,843.18/x
  3. Step 3: Cross multiply
    8,821.68x = 12,174.08 × 4,843.18
  4. Step 4: Simplify right side
    8,821.68x = 58,961,260.77
  5. Step 5: Solve for x
    x = 58,961,260.77/8,821.68
  6. Step 6: Final answer
    x = 6,683.68

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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.