Home / 2,792.90-4,188.13-1,405.37

Finding the Fourth Proportional to 2,792.90, 4,188.13 and 1,405.37

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Solution

The fourth proportional to 2,792.90, 4,188.13 and 1,405.37 is: 2,107.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.90 : 4,188.13 = 1,405.37 : x
  2. Step 2: Convert to fraction form
    2,792.90/4,188.13 = 1,405.37/x
  3. Step 3: Cross multiply
    2,792.90x = 4,188.13 × 1,405.37
  4. Step 4: Simplify right side
    2,792.90x = 5,885,872.26
  5. Step 5: Solve for x
    x = 5,885,872.26/2,792.90
  6. Step 6: Final answer
    x = 2,107.44

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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.