Home / 3,186.35-4,393.13-2,278.94

Finding the Fourth Proportional to 3,186.35, 4,393.13 and 2,278.94

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Solution

The fourth proportional to 3,186.35, 4,393.13 and 2,278.94 is: 3,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.35 : 4,393.13 = 2,278.94 : x
  2. Step 2: Convert to fraction form
    3,186.35/4,393.13 = 2,278.94/x
  3. Step 3: Cross multiply
    3,186.35x = 4,393.13 × 2,278.94
  4. Step 4: Simplify right side
    3,186.35x = 10,011,679.27
  5. Step 5: Solve for x
    x = 10,011,679.27/3,186.35
  6. Step 6: Final answer
    x = 3,142.06

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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.