Home / 2,775.42-4,163.58-1,388.52

Finding the Fourth Proportional to 2,775.42, 4,163.58 and 1,388.52

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Solution

The fourth proportional to 2,775.42, 4,163.58 and 1,388.52 is: 2,083.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.42 : 4,163.58 = 1,388.52 : x
  2. Step 2: Convert to fraction form
    2,775.42/4,163.58 = 1,388.52/x
  3. Step 3: Cross multiply
    2,775.42x = 4,163.58 × 1,388.52
  4. Step 4: Simplify right side
    2,775.42x = 5,781,214.10
  5. Step 5: Solve for x
    x = 5,781,214.10/2,775.42
  6. Step 6: Final answer
    x = 2,083.01

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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.