Home / 2,490.12-3,735.99-1,191.69

Finding the Fourth Proportional to 2,490.12, 3,735.99 and 1,191.69

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Solution

The fourth proportional to 2,490.12, 3,735.99 and 1,191.69 is: 1,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.12 : 3,735.99 = 1,191.69 : x
  2. Step 2: Convert to fraction form
    2,490.12/3,735.99 = 1,191.69/x
  3. Step 3: Cross multiply
    2,490.12x = 3,735.99 × 1,191.69
  4. Step 4: Simplify right side
    2,490.12x = 4,452,141.92
  5. Step 5: Solve for x
    x = 4,452,141.92/2,490.12
  6. Step 6: Final answer
    x = 1,787.92

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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.