Home / 3,143.56-4,328.20-2,851.96

Finding the Fourth Proportional to 3,143.56, 4,328.20 and 2,851.96

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Solution

The fourth proportional to 3,143.56, 4,328.20 and 2,851.96 is: 3,926.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.56 : 4,328.20 = 2,851.96 : x
  2. Step 2: Convert to fraction form
    3,143.56/4,328.20 = 2,851.96/x
  3. Step 3: Cross multiply
    3,143.56x = 4,328.20 × 2,851.96
  4. Step 4: Simplify right side
    3,143.56x = 12,343,853.27
  5. Step 5: Solve for x
    x = 12,343,853.27/3,143.56
  6. Step 6: Final answer
    x = 3,926.71

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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.