Home / 3,147.14-4,343.38-1,820.72

Finding the Fourth Proportional to 3,147.14, 4,343.38 and 1,820.72

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Solution

The fourth proportional to 3,147.14, 4,343.38 and 1,820.72 is: 2,512.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.14 : 4,343.38 = 1,820.72 : x
  2. Step 2: Convert to fraction form
    3,147.14/4,343.38 = 1,820.72/x
  3. Step 3: Cross multiply
    3,147.14x = 4,343.38 × 1,820.72
  4. Step 4: Simplify right side
    3,147.14x = 7,908,078.83
  5. Step 5: Solve for x
    x = 7,908,078.83/3,147.14
  6. Step 6: Final answer
    x = 2,512.78

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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.