Home / 2,747.46-4,121.18-1,287.64

Finding the Fourth Proportional to 2,747.46, 4,121.18 and 1,287.64

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Solution

The fourth proportional to 2,747.46, 4,121.18 and 1,287.64 is: 1,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.46 : 4,121.18 = 1,287.64 : x
  2. Step 2: Convert to fraction form
    2,747.46/4,121.18 = 1,287.64/x
  3. Step 3: Cross multiply
    2,747.46x = 4,121.18 × 1,287.64
  4. Step 4: Simplify right side
    2,747.46x = 5,306,596.22
  5. Step 5: Solve for x
    x = 5,306,596.22/2,747.46
  6. Step 6: Final answer
    x = 1,931.46

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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.