Home / 8,221.20-11,345.24-4,684.56

Finding the Fourth Proportional to 8,221.20, 11,345.24 and 4,684.56

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Solution

The fourth proportional to 8,221.20, 11,345.24 and 4,684.56 is: 6,464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.20 : 11,345.24 = 4,684.56 : x
  2. Step 2: Convert to fraction form
    8,221.20/11,345.24 = 4,684.56/x
  3. Step 3: Cross multiply
    8,221.20x = 11,345.24 × 4,684.56
  4. Step 4: Simplify right side
    8,221.20x = 53,147,457.49
  5. Step 5: Solve for x
    x = 53,147,457.49/8,221.20
  6. Step 6: Final answer
    x = 6,464.68

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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.