Home / 5,107.39-7,047.82-2,868.84

Finding the Fourth Proportional to 5,107.39, 7,047.82 and 2,868.84

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Solution

The fourth proportional to 5,107.39, 7,047.82 and 2,868.84 is: 3,958.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.39 : 7,047.82 = 2,868.84 : x
  2. Step 2: Convert to fraction form
    5,107.39/7,047.82 = 2,868.84/x
  3. Step 3: Cross multiply
    5,107.39x = 7,047.82 × 2,868.84
  4. Step 4: Simplify right side
    5,107.39x = 20,219,040.66
  5. Step 5: Solve for x
    x = 20,219,040.66/5,107.39
  6. Step 6: Final answer
    x = 3,958.78

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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.