Home / 5,118.75-7,678.14-2,040.75

Finding the Fourth Proportional to 5,118.75, 7,678.14 and 2,040.75

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Solution

The fourth proportional to 5,118.75, 7,678.14 and 2,040.75 is: 3,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.75 : 7,678.14 = 2,040.75 : x
  2. Step 2: Convert to fraction form
    5,118.75/7,678.14 = 2,040.75/x
  3. Step 3: Cross multiply
    5,118.75x = 7,678.14 × 2,040.75
  4. Step 4: Simplify right side
    5,118.75x = 15,669,164.21
  5. Step 5: Solve for x
    x = 15,669,164.21/5,118.75
  6. Step 6: Final answer
    x = 3,061.13

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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.