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Finding the Fourth Proportional to 8,369.60, 12,556.22 and 3,981.02

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Solution

The fourth proportional to 8,369.60, 12,556.22 and 3,981.02 is: 5,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.60 : 12,556.22 = 3,981.02 : x
  2. Step 2: Convert to fraction form
    8,369.60/12,556.22 = 3,981.02/x
  3. Step 3: Cross multiply
    8,369.60x = 12,556.22 × 3,981.02
  4. Step 4: Simplify right side
    8,369.60x = 49,986,480.26
  5. Step 5: Solve for x
    x = 49,986,480.26/8,369.60
  6. Step 6: Final answer
    x = 5,972.39

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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.