Home / 8,218.96-11,334.54-5,231.68

Finding the Fourth Proportional to 8,218.96, 11,334.54 and 5,231.68

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Solution

The fourth proportional to 8,218.96, 11,334.54 and 5,231.68 is: 7,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.96 : 11,334.54 = 5,231.68 : x
  2. Step 2: Convert to fraction form
    8,218.96/11,334.54 = 5,231.68/x
  3. Step 3: Cross multiply
    8,218.96x = 11,334.54 × 5,231.68
  4. Step 4: Simplify right side
    8,218.96x = 59,298,686.23
  5. Step 5: Solve for x
    x = 59,298,686.23/8,218.96
  6. Step 6: Final answer
    x = 7,214.86

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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.