Home / 6,820.20-9,410.38-3,909.26

Finding the Fourth Proportional to 6,820.20, 9,410.38 and 3,909.26

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Solution

The fourth proportional to 6,820.20, 9,410.38 and 3,909.26 is: 5,393.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.20 : 9,410.38 = 3,909.26 : x
  2. Step 2: Convert to fraction form
    6,820.20/9,410.38 = 3,909.26/x
  3. Step 3: Cross multiply
    6,820.20x = 9,410.38 × 3,909.26
  4. Step 4: Simplify right side
    6,820.20x = 36,787,635.87
  5. Step 5: Solve for x
    x = 36,787,635.87/6,820.20
  6. Step 6: Final answer
    x = 5,393.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.