Home / 3,101.78-4,280.00-1,775.27

Finding the Fourth Proportional to 3,101.78, 4,280.00 and 1,775.27

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Solution

The fourth proportional to 3,101.78, 4,280.00 and 1,775.27 is: 2,449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.78 : 4,280.00 = 1,775.27 : x
  2. Step 2: Convert to fraction form
    3,101.78/4,280.00 = 1,775.27/x
  3. Step 3: Cross multiply
    3,101.78x = 4,280.00 × 1,775.27
  4. Step 4: Simplify right side
    3,101.78x = 7,598,157.42
  5. Step 5: Solve for x
    x = 7,598,157.42/3,101.78
  6. Step 6: Final answer
    x = 2,449.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.