Home / 5,107.21-7,047.56-2,868.66

Finding the Fourth Proportional to 5,107.21, 7,047.56 and 2,868.66

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Solution

The fourth proportional to 5,107.21, 7,047.56 and 2,868.66 is: 3,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.21 : 7,047.56 = 2,868.66 : x
  2. Step 2: Convert to fraction form
    5,107.21/7,047.56 = 2,868.66/x
  3. Step 3: Cross multiply
    5,107.21x = 7,047.56 × 2,868.66
  4. Step 4: Simplify right side
    5,107.21x = 20,217,060.64
  5. Step 5: Solve for x
    x = 20,217,060.64/5,107.21
  6. Step 6: Final answer
    x = 3,958.54

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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.