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Finding the Fourth Proportional to 8,825.83, 12,169.85 and 8,621.71

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Solution

The fourth proportional to 8,825.83, 12,169.85 and 8,621.71 is: 11,888.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,825.83 : 12,169.85 = 8,621.71 : x
  2. Step 2: Convert to fraction form
    8,825.83/12,169.85 = 8,621.71/x
  3. Step 3: Cross multiply
    8,825.83x = 12,169.85 × 8,621.71
  4. Step 4: Simplify right side
    8,825.83x = 104,924,843.91
  5. Step 5: Solve for x
    x = 104,924,843.91/8,825.83
  6. Step 6: Final answer
    x = 11,888.39

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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.