Home / 2,578.26-3,867.38-630.45

Finding the Fourth Proportional to 2,578.26, 3,867.38 and 630.45

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Solution

The fourth proportional to 2,578.26, 3,867.38 and 630.45 is: 945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.26 : 3,867.38 = 630.45 : x
  2. Step 2: Convert to fraction form
    2,578.26/3,867.38 = 630.45/x
  3. Step 3: Cross multiply
    2,578.26x = 3,867.38 × 630.45
  4. Step 4: Simplify right side
    2,578.26x = 2,438,188.93
  5. Step 5: Solve for x
    x = 2,438,188.93/2,578.26
  6. Step 6: Final answer
    x = 945.67

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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.