Home / 3,918.72-5,873.28-2,622.72

Finding the Fourth Proportional to 3,918.72, 5,873.28 and 2,622.72

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Solution

The fourth proportional to 3,918.72, 5,873.28 and 2,622.72 is: 3,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.72 : 5,873.28 = 2,622.72 : x
  2. Step 2: Convert to fraction form
    3,918.72/5,873.28 = 2,622.72/x
  3. Step 3: Cross multiply
    3,918.72x = 5,873.28 × 2,622.72
  4. Step 4: Simplify right side
    3,918.72x = 15,403,968.92
  5. Step 5: Solve for x
    x = 15,403,968.92/3,918.72
  6. Step 6: Final answer
    x = 3,930.87

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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.