Home / 3,138.74-4,705.32-1,192.31

Finding the Fourth Proportional to 3,138.74, 4,705.32 and 1,192.31

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Solution

The fourth proportional to 3,138.74, 4,705.32 and 1,192.31 is: 1,787.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.74 : 4,705.32 = 1,192.31 : x
  2. Step 2: Convert to fraction form
    3,138.74/4,705.32 = 1,192.31/x
  3. Step 3: Cross multiply
    3,138.74x = 4,705.32 × 1,192.31
  4. Step 4: Simplify right side
    3,138.74x = 5,610,200.09
  5. Step 5: Solve for x
    x = 5,610,200.09/3,138.74
  6. Step 6: Final answer
    x = 1,787.41

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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.