Home / 7,161.16-10,742.32-2,720.95

Finding the Fourth Proportional to 7,161.16, 10,742.32 and 2,720.95

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Solution

The fourth proportional to 7,161.16, 10,742.32 and 2,720.95 is: 4,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.16 : 10,742.32 = 2,720.95 : x
  2. Step 2: Convert to fraction form
    7,161.16/10,742.32 = 2,720.95/x
  3. Step 3: Cross multiply
    7,161.16x = 10,742.32 × 2,720.95
  4. Step 4: Simplify right side
    7,161.16x = 29,229,359.07
  5. Step 5: Solve for x
    x = 29,229,359.07/7,161.16
  6. Step 6: Final answer
    x = 4,081.65

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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.