Home / 7,490.22-11,236.53-2,811.84

Finding the Fourth Proportional to 7,490.22, 11,236.53 and 2,811.84

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Solution

The fourth proportional to 7,490.22, 11,236.53 and 2,811.84 is: 4,218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.22 : 11,236.53 = 2,811.84 : x
  2. Step 2: Convert to fraction form
    7,490.22/11,236.53 = 2,811.84/x
  3. Step 3: Cross multiply
    7,490.22x = 11,236.53 × 2,811.84
  4. Step 4: Simplify right side
    7,490.22x = 31,595,324.52
  5. Step 5: Solve for x
    x = 31,595,324.52/7,490.22
  6. Step 6: Final answer
    x = 4,218.21

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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.