Home / 3,129.17-4,699.11-2,778.56

Finding the Fourth Proportional to 3,129.17, 4,699.11 and 2,778.56

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Solution

The fourth proportional to 3,129.17, 4,699.11 and 2,778.56 is: 4,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.17 : 4,699.11 = 2,778.56 : x
  2. Step 2: Convert to fraction form
    3,129.17/4,699.11 = 2,778.56/x
  3. Step 3: Cross multiply
    3,129.17x = 4,699.11 × 2,778.56
  4. Step 4: Simplify right side
    3,129.17x = 13,056,759.08
  5. Step 5: Solve for x
    x = 13,056,759.08/3,129.17
  6. Step 6: Final answer
    x = 4,172.60

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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.