Home / 6,872.92-9,485.12-3,889.04

Finding the Fourth Proportional to 6,872.92, 9,485.12 and 3,889.04

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Solution

The fourth proportional to 6,872.92, 9,485.12 and 3,889.04 is: 5,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.92 : 9,485.12 = 3,889.04 : x
  2. Step 2: Convert to fraction form
    6,872.92/9,485.12 = 3,889.04/x
  3. Step 3: Cross multiply
    6,872.92x = 9,485.12 × 3,889.04
  4. Step 4: Simplify right side
    6,872.92x = 36,888,011.08
  5. Step 5: Solve for x
    x = 36,888,011.08/6,872.92
  6. Step 6: Final answer
    x = 5,367.15

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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.