Home / 6,931.05-10,394.43-1,999.36

Finding the Fourth Proportional to 6,931.05, 10,394.43 and 1,999.36

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Solution

The fourth proportional to 6,931.05, 10,394.43 and 1,999.36 is: 2,998.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.05 : 10,394.43 = 1,999.36 : x
  2. Step 2: Convert to fraction form
    6,931.05/10,394.43 = 1,999.36/x
  3. Step 3: Cross multiply
    6,931.05x = 10,394.43 × 1,999.36
  4. Step 4: Simplify right side
    6,931.05x = 20,782,207.56
  5. Step 5: Solve for x
    x = 20,782,207.56/6,931.05
  6. Step 6: Final answer
    x = 2,998.42

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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.