Home / 8,221.22-11,345.23-4,684.36

Finding the Fourth Proportional to 8,221.22, 11,345.23 and 4,684.36

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Solution

The fourth proportional to 8,221.22, 11,345.23 and 4,684.36 is: 6,464.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.22 : 11,345.23 = 4,684.36 : x
  2. Step 2: Convert to fraction form
    8,221.22/11,345.23 = 4,684.36/x
  3. Step 3: Cross multiply
    8,221.22x = 11,345.23 × 4,684.36
  4. Step 4: Simplify right side
    8,221.22x = 53,145,141.60
  5. Step 5: Solve for x
    x = 53,145,141.60/8,221.22
  6. Step 6: Final answer
    x = 6,464.39

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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.