Home / 5,238.17-7,857.23-2,118.14

Finding the Fourth Proportional to 5,238.17, 7,857.23 and 2,118.14

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Solution

The fourth proportional to 5,238.17, 7,857.23 and 2,118.14 is: 3,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.17 : 7,857.23 = 2,118.14 : x
  2. Step 2: Convert to fraction form
    5,238.17/7,857.23 = 2,118.14/x
  3. Step 3: Cross multiply
    5,238.17x = 7,857.23 × 2,118.14
  4. Step 4: Simplify right side
    5,238.17x = 16,642,713.59
  5. Step 5: Solve for x
    x = 16,642,713.59/5,238.17
  6. Step 6: Final answer
    x = 3,177.20

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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.