Home / 5,138.13-7,710.74-2,018.12

Finding the Fourth Proportional to 5,138.13, 7,710.74 and 2,018.12

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Solution

The fourth proportional to 5,138.13, 7,710.74 and 2,018.12 is: 3,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.13 : 7,710.74 = 2,018.12 : x
  2. Step 2: Convert to fraction form
    5,138.13/7,710.74 = 2,018.12/x
  3. Step 3: Cross multiply
    5,138.13x = 7,710.74 × 2,018.12
  4. Step 4: Simplify right side
    5,138.13x = 15,561,168.88
  5. Step 5: Solve for x
    x = 15,561,168.88/5,138.13
  6. Step 6: Final answer
    x = 3,028.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.