Home / 2,775.20-4,162.87-1,314.50

Finding the Fourth Proportional to 2,775.20, 4,162.87 and 1,314.50

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Solution

The fourth proportional to 2,775.20, 4,162.87 and 1,314.50 is: 1,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.20 : 4,162.87 = 1,314.50 : x
  2. Step 2: Convert to fraction form
    2,775.20/4,162.87 = 1,314.50/x
  3. Step 3: Cross multiply
    2,775.20x = 4,162.87 × 1,314.50
  4. Step 4: Simplify right side
    2,775.20x = 5,472,104.67
  5. Step 5: Solve for x
    x = 5,472,104.67/2,775.20
  6. Step 6: Final answer
    x = 1,971.79

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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.