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Finding the Fourth Proportional to 8,568.54, 12,854.69 and 3,642.39

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Solution

The fourth proportional to 8,568.54, 12,854.69 and 3,642.39 is: 5,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,568.54 : 12,854.69 = 3,642.39 : x
  2. Step 2: Convert to fraction form
    8,568.54/12,854.69 = 3,642.39/x
  3. Step 3: Cross multiply
    8,568.54x = 12,854.69 × 3,642.39
  4. Step 4: Simplify right side
    8,568.54x = 46,821,794.31
  5. Step 5: Solve for x
    x = 46,821,794.31/8,568.54
  6. Step 6: Final answer
    x = 5,464.38

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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.