Home / 5,107.19-7,047.81-2,868.75

Finding the Fourth Proportional to 5,107.19, 7,047.81 and 2,868.75

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Solution

The fourth proportional to 5,107.19, 7,047.81 and 2,868.75 is: 3,958.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.19 : 7,047.81 = 2,868.75 : x
  2. Step 2: Convert to fraction form
    5,107.19/7,047.81 = 2,868.75/x
  3. Step 3: Cross multiply
    5,107.19x = 7,047.81 × 2,868.75
  4. Step 4: Simplify right side
    5,107.19x = 20,218,404.94
  5. Step 5: Solve for x
    x = 20,218,404.94/5,107.19
  6. Step 6: Final answer
    x = 3,958.82

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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.