Home / 7,108.14-9,809.45-3,921.66

Finding the Fourth Proportional to 7,108.14, 9,809.45 and 3,921.66

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Solution

The fourth proportional to 7,108.14, 9,809.45 and 3,921.66 is: 5,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.14 : 9,809.45 = 3,921.66 : x
  2. Step 2: Convert to fraction form
    7,108.14/9,809.45 = 3,921.66/x
  3. Step 3: Cross multiply
    7,108.14x = 9,809.45 × 3,921.66
  4. Step 4: Simplify right side
    7,108.14x = 38,469,308.08
  5. Step 5: Solve for x
    x = 38,469,308.08/7,108.14
  6. Step 6: Final answer
    x = 5,412.01

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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.