Home / 2,778.21-4,165.34-1,217.34

Finding the Fourth Proportional to 2,778.21, 4,165.34 and 1,217.34

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Solution

The fourth proportional to 2,778.21, 4,165.34 and 1,217.34 is: 1,825.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.21 : 4,165.34 = 1,217.34 : x
  2. Step 2: Convert to fraction form
    2,778.21/4,165.34 = 1,217.34/x
  3. Step 3: Cross multiply
    2,778.21x = 4,165.34 × 1,217.34
  4. Step 4: Simplify right side
    2,778.21x = 5,070,628.91
  5. Step 5: Solve for x
    x = 5,070,628.91/2,778.21
  6. Step 6: Final answer
    x = 1,825.14

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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.