Home / 3,120.17-4,680.27-2,143.31

Finding the Fourth Proportional to 3,120.17, 4,680.27 and 2,143.31

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Solution

The fourth proportional to 3,120.17, 4,680.27 and 2,143.31 is: 3,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.17 : 4,680.27 = 2,143.31 : x
  2. Step 2: Convert to fraction form
    3,120.17/4,680.27 = 2,143.31/x
  3. Step 3: Cross multiply
    3,120.17x = 4,680.27 × 2,143.31
  4. Step 4: Simplify right side
    3,120.17x = 10,031,246.09
  5. Step 5: Solve for x
    x = 10,031,246.09/3,120.17
  6. Step 6: Final answer
    x = 3,214.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.