Home / 8,107.40-11,189.94-5,127.14

Finding the Fourth Proportional to 8,107.40, 11,189.94 and 5,127.14

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Solution

The fourth proportional to 8,107.40, 11,189.94 and 5,127.14 is: 7,076.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.40 : 11,189.94 = 5,127.14 : x
  2. Step 2: Convert to fraction form
    8,107.40/11,189.94 = 5,127.14/x
  3. Step 3: Cross multiply
    8,107.40x = 11,189.94 × 5,127.14
  4. Step 4: Simplify right side
    8,107.40x = 57,372,388.97
  5. Step 5: Solve for x
    x = 57,372,388.97/8,107.40
  6. Step 6: Final answer
    x = 7,076.55

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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.