Home / 5,161.14-7,122.37-2,803.28

Finding the Fourth Proportional to 5,161.14, 7,122.37 and 2,803.28

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Solution

The fourth proportional to 5,161.14, 7,122.37 and 2,803.28 is: 3,868.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.14 : 7,122.37 = 2,803.28 : x
  2. Step 2: Convert to fraction form
    5,161.14/7,122.37 = 2,803.28/x
  3. Step 3: Cross multiply
    5,161.14x = 7,122.37 × 2,803.28
  4. Step 4: Simplify right side
    5,161.14x = 19,965,997.37
  5. Step 5: Solve for x
    x = 19,965,997.37/5,161.14
  6. Step 6: Final answer
    x = 3,868.52

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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.