Home / 6,778.08-9,350.64-3,981.60

Finding the Fourth Proportional to 6,778.08, 9,350.64 and 3,981.60

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Solution

The fourth proportional to 6,778.08, 9,350.64 and 3,981.60 is: 5,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,778.08 : 9,350.64 = 3,981.60 : x
  2. Step 2: Convert to fraction form
    6,778.08/9,350.64 = 3,981.60/x
  3. Step 3: Cross multiply
    6,778.08x = 9,350.64 × 3,981.60
  4. Step 4: Simplify right side
    6,778.08x = 37,230,508.22
  5. Step 5: Solve for x
    x = 37,230,508.22/6,778.08
  6. Step 6: Final answer
    x = 5,492.78

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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.