Home / 5,158.91-7,119.44-2,801.20

Finding the Fourth Proportional to 5,158.91, 7,119.44 and 2,801.20

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Solution

The fourth proportional to 5,158.91, 7,119.44 and 2,801.20 is: 3,865.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.91 : 7,119.44 = 2,801.20 : x
  2. Step 2: Convert to fraction form
    5,158.91/7,119.44 = 2,801.20/x
  3. Step 3: Cross multiply
    5,158.91x = 7,119.44 × 2,801.20
  4. Step 4: Simplify right side
    5,158.91x = 19,942,975.33
  5. Step 5: Solve for x
    x = 19,942,975.33/5,158.91
  6. Step 6: Final answer
    x = 3,865.73

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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.