Home / 5,107.05-7,047.78-2,868.95

Finding the Fourth Proportional to 5,107.05, 7,047.78 and 2,868.95

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Solution

The fourth proportional to 5,107.05, 7,047.78 and 2,868.95 is: 3,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.05 : 7,047.78 = 2,868.95 : x
  2. Step 2: Convert to fraction form
    5,107.05/7,047.78 = 2,868.95/x
  3. Step 3: Cross multiply
    5,107.05x = 7,047.78 × 2,868.95
  4. Step 4: Simplify right side
    5,107.05x = 20,219,735.29
  5. Step 5: Solve for x
    x = 20,219,735.29/5,107.05
  6. Step 6: Final answer
    x = 3,959.18

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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.