Home / 2,751.86-4,121.93-1,272.30

Finding the Fourth Proportional to 2,751.86, 4,121.93 and 1,272.30

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Solution

The fourth proportional to 2,751.86, 4,121.93 and 1,272.30 is: 1,905.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.86 : 4,121.93 = 1,272.30 : x
  2. Step 2: Convert to fraction form
    2,751.86/4,121.93 = 1,272.30/x
  3. Step 3: Cross multiply
    2,751.86x = 4,121.93 × 1,272.30
  4. Step 4: Simplify right side
    2,751.86x = 5,244,319.26
  5. Step 5: Solve for x
    x = 5,244,319.26/2,751.86
  6. Step 6: Final answer
    x = 1,905.73

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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.