Home / 2,751.36-4,125.12-1,289.64

Finding the Fourth Proportional to 2,751.36, 4,125.12 and 1,289.64

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Solution

The fourth proportional to 2,751.36, 4,125.12 and 1,289.64 is: 1,933.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.36 : 4,125.12 = 1,289.64 : x
  2. Step 2: Convert to fraction form
    2,751.36/4,125.12 = 1,289.64/x
  3. Step 3: Cross multiply
    2,751.36x = 4,125.12 × 1,289.64
  4. Step 4: Simplify right side
    2,751.36x = 5,319,919.76
  5. Step 5: Solve for x
    x = 5,319,919.76/2,751.36
  6. Step 6: Final answer
    x = 1,933.56

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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.