Home / 3,120.38-4,680.54-1,271.06

Finding the Fourth Proportional to 3,120.38, 4,680.54 and 1,271.06

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Solution

The fourth proportional to 3,120.38, 4,680.54 and 1,271.06 is: 1,906.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.38 : 4,680.54 = 1,271.06 : x
  2. Step 2: Convert to fraction form
    3,120.38/4,680.54 = 1,271.06/x
  3. Step 3: Cross multiply
    3,120.38x = 4,680.54 × 1,271.06
  4. Step 4: Simplify right side
    3,120.38x = 5,949,247.17
  5. Step 5: Solve for x
    x = 5,949,247.17/3,120.38
  6. Step 6: Final answer
    x = 1,906.58

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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.