Home / 3,129.19-4,694.45-1,181.38

Finding the Fourth Proportional to 3,129.19, 4,694.45 and 1,181.38

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Solution

The fourth proportional to 3,129.19, 4,694.45 and 1,181.38 is: 1,772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.19 : 4,694.45 = 1,181.38 : x
  2. Step 2: Convert to fraction form
    3,129.19/4,694.45 = 1,181.38/x
  3. Step 3: Cross multiply
    3,129.19x = 4,694.45 × 1,181.38
  4. Step 4: Simplify right side
    3,129.19x = 5,545,929.34
  5. Step 5: Solve for x
    x = 5,545,929.34/3,129.19
  6. Step 6: Final answer
    x = 1,772.32

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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.