Home / 7,420.92-11,131.71-4,131.53

Finding the Fourth Proportional to 7,420.92, 11,131.71 and 4,131.53

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Solution

The fourth proportional to 7,420.92, 11,131.71 and 4,131.53 is: 6,197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.92 : 11,131.71 = 4,131.53 : x
  2. Step 2: Convert to fraction form
    7,420.92/11,131.71 = 4,131.53/x
  3. Step 3: Cross multiply
    7,420.92x = 11,131.71 × 4,131.53
  4. Step 4: Simplify right side
    7,420.92x = 45,990,993.82
  5. Step 5: Solve for x
    x = 45,990,993.82/7,420.92
  6. Step 6: Final answer
    x = 6,197.48

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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.