Home / 7,984.80-11,921.70-6,727.20

Finding the Fourth Proportional to 7,984.80, 11,921.70 and 6,727.20

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Solution

The fourth proportional to 7,984.80, 11,921.70 and 6,727.20 is: 10,044.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.80 : 11,921.70 = 6,727.20 : x
  2. Step 2: Convert to fraction form
    7,984.80/11,921.70 = 6,727.20/x
  3. Step 3: Cross multiply
    7,984.80x = 11,921.70 × 6,727.20
  4. Step 4: Simplify right side
    7,984.80x = 80,199,660.24
  5. Step 5: Solve for x
    x = 80,199,660.24/7,984.80
  6. Step 6: Final answer
    x = 10,044.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.