Home / 3,186.42-4,397.28-1,770.12

Finding the Fourth Proportional to 3,186.42, 4,397.28 and 1,770.12

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Solution

The fourth proportional to 3,186.42, 4,397.28 and 1,770.12 is: 2,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.42 : 4,397.28 = 1,770.12 : x
  2. Step 2: Convert to fraction form
    3,186.42/4,397.28 = 1,770.12/x
  3. Step 3: Cross multiply
    3,186.42x = 4,397.28 × 1,770.12
  4. Step 4: Simplify right side
    3,186.42x = 7,783,713.27
  5. Step 5: Solve for x
    x = 7,783,713.27/3,186.42
  6. Step 6: Final answer
    x = 2,442.78

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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.