Home / 7,948.07-11,921.90-3,791.01

Finding the Fourth Proportional to 7,948.07, 11,921.90 and 3,791.01

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Solution

The fourth proportional to 7,948.07, 11,921.90 and 3,791.01 is: 5,686.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948.07 : 11,921.90 = 3,791.01 : x
  2. Step 2: Convert to fraction form
    7,948.07/11,921.90 = 3,791.01/x
  3. Step 3: Cross multiply
    7,948.07x = 11,921.90 × 3,791.01
  4. Step 4: Simplify right side
    7,948.07x = 45,196,042.12
  5. Step 5: Solve for x
    x = 45,196,042.12/7,948.07
  6. Step 6: Final answer
    x = 5,686.42

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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.