Home / 5,278.31-7,917.40-2,200.31

Finding the Fourth Proportional to 5,278.31, 7,917.40 and 2,200.31

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Solution

The fourth proportional to 5,278.31, 7,917.40 and 2,200.31 is: 3,300.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.31 : 7,917.40 = 2,200.31 : x
  2. Step 2: Convert to fraction form
    5,278.31/7,917.40 = 2,200.31/x
  3. Step 3: Cross multiply
    5,278.31x = 7,917.40 × 2,200.31
  4. Step 4: Simplify right side
    5,278.31x = 17,420,734.39
  5. Step 5: Solve for x
    x = 17,420,734.39/5,278.31
  6. Step 6: Final answer
    x = 3,300.44

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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.