Home / 7,800.66-11,700.96-2,540.04

Finding the Fourth Proportional to 7,800.66, 11,700.96 and 2,540.04

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Solution

The fourth proportional to 7,800.66, 11,700.96 and 2,540.04 is: 3,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.66 : 11,700.96 = 2,540.04 : x
  2. Step 2: Convert to fraction form
    7,800.66/11,700.96 = 2,540.04/x
  3. Step 3: Cross multiply
    7,800.66x = 11,700.96 × 2,540.04
  4. Step 4: Simplify right side
    7,800.66x = 29,720,906.44
  5. Step 5: Solve for x
    x = 29,720,906.44/7,800.66
  6. Step 6: Final answer
    x = 3,810.05

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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.