Home / 7,578.27-11,370.24-3,420.21

Finding the Fourth Proportional to 7,578.27, 11,370.24 and 3,420.21

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Solution

The fourth proportional to 7,578.27, 11,370.24 and 3,420.21 is: 5,131.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.27 : 11,370.24 = 3,420.21 : x
  2. Step 2: Convert to fraction form
    7,578.27/11,370.24 = 3,420.21/x
  3. Step 3: Cross multiply
    7,578.27x = 11,370.24 × 3,420.21
  4. Step 4: Simplify right side
    7,578.27x = 38,888,608.55
  5. Step 5: Solve for x
    x = 38,888,608.55/7,578.27
  6. Step 6: Final answer
    x = 5,131.59

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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.