Home / 8,221.33-11,345.41-4,684.57

Finding the Fourth Proportional to 8,221.33, 11,345.41 and 4,684.57

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Solution

The fourth proportional to 8,221.33, 11,345.41 and 4,684.57 is: 6,464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.33 : 11,345.41 = 4,684.57 : x
  2. Step 2: Convert to fraction form
    8,221.33/11,345.41 = 4,684.57/x
  3. Step 3: Cross multiply
    8,221.33x = 11,345.41 × 4,684.57
  4. Step 4: Simplify right side
    8,221.33x = 53,148,367.32
  5. Step 5: Solve for x
    x = 53,148,367.32/8,221.33
  6. Step 6: Final answer
    x = 6,464.69

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Half scale
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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.