Home / 3,186.08-4,393.84-1,989.52

Finding the Fourth Proportional to 3,186.08, 4,393.84 and 1,989.52

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Solution

The fourth proportional to 3,186.08, 4,393.84 and 1,989.52 is: 2,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.08 : 4,393.84 = 1,989.52 : x
  2. Step 2: Convert to fraction form
    3,186.08/4,393.84 = 1,989.52/x
  3. Step 3: Cross multiply
    3,186.08x = 4,393.84 × 1,989.52
  4. Step 4: Simplify right side
    3,186.08x = 8,741,632.56
  5. Step 5: Solve for x
    x = 8,741,632.56/3,186.08
  6. Step 6: Final answer
    x = 2,743.70

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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.