Home / 2,750.36-4,125.77-1,288.73

Finding the Fourth Proportional to 2,750.36, 4,125.77 and 1,288.73

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Solution

The fourth proportional to 2,750.36, 4,125.77 and 1,288.73 is: 1,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.36 : 4,125.77 = 1,288.73 : x
  2. Step 2: Convert to fraction form
    2,750.36/4,125.77 = 1,288.73/x
  3. Step 3: Cross multiply
    2,750.36x = 4,125.77 × 1,288.73
  4. Step 4: Simplify right side
    2,750.36x = 5,316,986.17
  5. Step 5: Solve for x
    x = 5,316,986.17/2,750.36
  6. Step 6: Final answer
    x = 1,933.20

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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.