Home / 5,107.26-7,047.86-2,869.38

Finding the Fourth Proportional to 5,107.26, 7,047.86 and 2,869.38

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Solution

The fourth proportional to 5,107.26, 7,047.86 and 2,869.38 is: 3,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.26 : 7,047.86 = 2,869.38 : x
  2. Step 2: Convert to fraction form
    5,107.26/7,047.86 = 2,869.38/x
  3. Step 3: Cross multiply
    5,107.26x = 7,047.86 × 2,869.38
  4. Step 4: Simplify right side
    5,107.26x = 20,222,988.53
  5. Step 5: Solve for x
    x = 20,222,988.53/5,107.26
  6. Step 6: Final answer
    x = 3,959.66

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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.