Home / 5,163.90-7,126.07-2,805.99

Finding the Fourth Proportional to 5,163.90, 7,126.07 and 2,805.99

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Solution

The fourth proportional to 5,163.90, 7,126.07 and 2,805.99 is: 3,872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.90 : 7,126.07 = 2,805.99 : x
  2. Step 2: Convert to fraction form
    5,163.90/7,126.07 = 2,805.99/x
  3. Step 3: Cross multiply
    5,163.90x = 7,126.07 × 2,805.99
  4. Step 4: Simplify right side
    5,163.90x = 19,995,667.13
  5. Step 5: Solve for x
    x = 19,995,667.13/5,163.90
  6. Step 6: Final answer
    x = 3,872.20

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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.