Home / 6,909.40-10,356.07-3,949.92

Finding the Fourth Proportional to 6,909.40, 10,356.07 and 3,949.92

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Solution

The fourth proportional to 6,909.40, 10,356.07 and 3,949.92 is: 5,920.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.40 : 10,356.07 = 3,949.92 : x
  2. Step 2: Convert to fraction form
    6,909.40/10,356.07 = 3,949.92/x
  3. Step 3: Cross multiply
    6,909.40x = 10,356.07 × 3,949.92
  4. Step 4: Simplify right side
    6,909.40x = 40,905,648.01
  5. Step 5: Solve for x
    x = 40,905,648.01/6,909.40
  6. Step 6: Final answer
    x = 5,920.29

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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.