Home / 7,015.92-9,682.20-3,872.40

Finding the Fourth Proportional to 7,015.92, 9,682.20 and 3,872.40

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Solution

The fourth proportional to 7,015.92, 9,682.20 and 3,872.40 is: 5,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.92 : 9,682.20 = 3,872.40 : x
  2. Step 2: Convert to fraction form
    7,015.92/9,682.20 = 3,872.40/x
  3. Step 3: Cross multiply
    7,015.92x = 9,682.20 × 3,872.40
  4. Step 4: Simplify right side
    7,015.92x = 37,493,351.28
  5. Step 5: Solve for x
    x = 37,493,351.28/7,015.92
  6. Step 6: Final answer
    x = 5,344.04

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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.