Home / 8,121.96-11,214.18-5,335.56

Finding the Fourth Proportional to 8,121.96, 11,214.18 and 5,335.56

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Solution

The fourth proportional to 8,121.96, 11,214.18 and 5,335.56 is: 7,366.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.96 : 11,214.18 = 5,335.56 : x
  2. Step 2: Convert to fraction form
    8,121.96/11,214.18 = 5,335.56/x
  3. Step 3: Cross multiply
    8,121.96x = 11,214.18 × 5,335.56
  4. Step 4: Simplify right side
    8,121.96x = 59,833,930.24
  5. Step 5: Solve for x
    x = 59,833,930.24/8,121.96
  6. Step 6: Final answer
    x = 7,366.93

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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.