Home / 6,781.58-9,358.30-3,949.03

Finding the Fourth Proportional to 6,781.58, 9,358.30 and 3,949.03

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Solution

The fourth proportional to 6,781.58, 9,358.30 and 3,949.03 is: 5,449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.58 : 9,358.30 = 3,949.03 : x
  2. Step 2: Convert to fraction form
    6,781.58/9,358.30 = 3,949.03/x
  3. Step 3: Cross multiply
    6,781.58x = 9,358.30 × 3,949.03
  4. Step 4: Simplify right side
    6,781.58x = 36,956,207.45
  5. Step 5: Solve for x
    x = 36,956,207.45/6,781.58
  6. Step 6: Final answer
    x = 5,449.50

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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.