Home / 2,578.20-3,867.36-630.44

Finding the Fourth Proportional to 2,578.20, 3,867.36 and 630.44

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Solution

The fourth proportional to 2,578.20, 3,867.36 and 630.44 is: 945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.20 : 3,867.36 = 630.44 : x
  2. Step 2: Convert to fraction form
    2,578.20/3,867.36 = 630.44/x
  3. Step 3: Cross multiply
    2,578.20x = 3,867.36 × 630.44
  4. Step 4: Simplify right side
    2,578.20x = 2,438,138.44
  5. Step 5: Solve for x
    x = 2,438,138.44/2,578.20
  6. Step 6: Final answer
    x = 945.67

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1.5x scale

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.