Home / 2,945.78-4,418.75-1,191.62

Finding the Fourth Proportional to 2,945.78, 4,418.75 and 1,191.62

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Solution

The fourth proportional to 2,945.78, 4,418.75 and 1,191.62 is: 1,787.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.78 : 4,418.75 = 1,191.62 : x
  2. Step 2: Convert to fraction form
    2,945.78/4,418.75 = 1,191.62/x
  3. Step 3: Cross multiply
    2,945.78x = 4,418.75 × 1,191.62
  4. Step 4: Simplify right side
    2,945.78x = 5,265,451.76
  5. Step 5: Solve for x
    x = 5,265,451.76/2,945.78
  6. Step 6: Final answer
    x = 1,787.46

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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.