Home / 5,164.82-7,127.41-2,806.91

Finding the Fourth Proportional to 5,164.82, 7,127.41 and 2,806.91

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Solution

The fourth proportional to 5,164.82, 7,127.41 and 2,806.91 is: 3,873.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.82 : 7,127.41 = 2,806.91 : x
  2. Step 2: Convert to fraction form
    5,164.82/7,127.41 = 2,806.91/x
  3. Step 3: Cross multiply
    5,164.82x = 7,127.41 × 2,806.91
  4. Step 4: Simplify right side
    5,164.82x = 20,005,998.40
  5. Step 5: Solve for x
    x = 20,005,998.40/5,164.82
  6. Step 6: Final answer
    x = 3,873.51

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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.