Home / 7,922.76-11,871.18-4,221.06

Finding the Fourth Proportional to 7,922.76, 11,871.18 and 4,221.06

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Solution

The fourth proportional to 7,922.76, 11,871.18 and 4,221.06 is: 6,324.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.76 : 11,871.18 = 4,221.06 : x
  2. Step 2: Convert to fraction form
    7,922.76/11,871.18 = 4,221.06/x
  3. Step 3: Cross multiply
    7,922.76x = 11,871.18 × 4,221.06
  4. Step 4: Simplify right side
    7,922.76x = 50,108,963.05
  5. Step 5: Solve for x
    x = 50,108,963.05/7,922.76
  6. Step 6: Final answer
    x = 6,324.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.