Home / 6,917.22-10,375.83-1,987.20

Finding the Fourth Proportional to 6,917.22, 10,375.83 and 1,987.20

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Solution

The fourth proportional to 6,917.22, 10,375.83 and 1,987.20 is: 2,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.22 : 10,375.83 = 1,987.20 : x
  2. Step 2: Convert to fraction form
    6,917.22/10,375.83 = 1,987.20/x
  3. Step 3: Cross multiply
    6,917.22x = 10,375.83 × 1,987.20
  4. Step 4: Simplify right side
    6,917.22x = 20,618,849.38
  5. Step 5: Solve for x
    x = 20,618,849.38/6,917.22
  6. Step 6: Final answer
    x = 2,980.80

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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.