Home / 4,117.75-5,680.47-2,791.87

Finding the Fourth Proportional to 4,117.75, 5,680.47 and 2,791.87

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Solution

The fourth proportional to 4,117.75, 5,680.47 and 2,791.87 is: 3,851.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,117.75 : 5,680.47 = 2,791.87 : x
  2. Step 2: Convert to fraction form
    4,117.75/5,680.47 = 2,791.87/x
  3. Step 3: Cross multiply
    4,117.75x = 5,680.47 × 2,791.87
  4. Step 4: Simplify right side
    4,117.75x = 15,859,133.78
  5. Step 5: Solve for x
    x = 15,859,133.78/4,117.75
  6. Step 6: Final answer
    x = 3,851.41

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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.