Home / 5,171.78-7,137.69-3,075.86

Finding the Fourth Proportional to 5,171.78, 7,137.69 and 3,075.86

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Solution

The fourth proportional to 5,171.78, 7,137.69 and 3,075.86 is: 4,245.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.78 : 7,137.69 = 3,075.86 : x
  2. Step 2: Convert to fraction form
    5,171.78/7,137.69 = 3,075.86/x
  3. Step 3: Cross multiply
    5,171.78x = 7,137.69 × 3,075.86
  4. Step 4: Simplify right side
    5,171.78x = 21,954,535.16
  5. Step 5: Solve for x
    x = 21,954,535.16/5,171.78
  6. Step 6: Final answer
    x = 4,245.06

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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.