Home / 7,420.66-11,131.74-2,741.90

Finding the Fourth Proportional to 7,420.66, 11,131.74 and 2,741.90

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Solution

The fourth proportional to 7,420.66, 11,131.74 and 2,741.90 is: 4,113.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.66 : 11,131.74 = 2,741.90 : x
  2. Step 2: Convert to fraction form
    7,420.66/11,131.74 = 2,741.90/x
  3. Step 3: Cross multiply
    7,420.66x = 11,131.74 × 2,741.90
  4. Step 4: Simplify right side
    7,420.66x = 30,522,062.25
  5. Step 5: Solve for x
    x = 30,522,062.25/7,420.66
  6. Step 6: Final answer
    x = 4,113.12

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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.