Home / 5,126.91-7,075.06-2,889.01

Finding the Fourth Proportional to 5,126.91, 7,075.06 and 2,889.01

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Solution

The fourth proportional to 5,126.91, 7,075.06 and 2,889.01 is: 3,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.91 : 7,075.06 = 2,889.01 : x
  2. Step 2: Convert to fraction form
    5,126.91/7,075.06 = 2,889.01/x
  3. Step 3: Cross multiply
    5,126.91x = 7,075.06 × 2,889.01
  4. Step 4: Simplify right side
    5,126.91x = 20,439,919.09
  5. Step 5: Solve for x
    x = 20,439,919.09/5,126.91
  6. Step 6: Final answer
    x = 3,986.79

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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.