Home / 7,811.22-11,721.49-3,132.26

Finding the Fourth Proportional to 7,811.22, 11,721.49 and 3,132.26

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Solution

The fourth proportional to 7,811.22, 11,721.49 and 3,132.26 is: 4,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.22 : 11,721.49 = 3,132.26 : x
  2. Step 2: Convert to fraction form
    7,811.22/11,721.49 = 3,132.26/x
  3. Step 3: Cross multiply
    7,811.22x = 11,721.49 × 3,132.26
  4. Step 4: Simplify right side
    7,811.22x = 36,714,754.27
  5. Step 5: Solve for x
    x = 36,714,754.27/7,811.22
  6. Step 6: Final answer
    x = 4,700.26

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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.