Home / 6,921.87-9,552.20-3,778.05

Finding the Fourth Proportional to 6,921.87, 9,552.20 and 3,778.05

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Solution

The fourth proportional to 6,921.87, 9,552.20 and 3,778.05 is: 5,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.87 : 9,552.20 = 3,778.05 : x
  2. Step 2: Convert to fraction form
    6,921.87/9,552.20 = 3,778.05/x
  3. Step 3: Cross multiply
    6,921.87x = 9,552.20 × 3,778.05
  4. Step 4: Simplify right side
    6,921.87x = 36,088,689.21
  5. Step 5: Solve for x
    x = 36,088,689.21/6,921.87
  6. Step 6: Final answer
    x = 5,213.72

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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.