Home / 2,792.21-4,188.40-1,404.79

Finding the Fourth Proportional to 2,792.21, 4,188.40 and 1,404.79

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Solution

The fourth proportional to 2,792.21, 4,188.40 and 1,404.79 is: 2,107.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.21 : 4,188.40 = 1,404.79 : x
  2. Step 2: Convert to fraction form
    2,792.21/4,188.40 = 1,404.79/x
  3. Step 3: Cross multiply
    2,792.21x = 4,188.40 × 1,404.79
  4. Step 4: Simplify right side
    2,792.21x = 5,883,801.49
  5. Step 5: Solve for x
    x = 5,883,801.49/2,792.21
  6. Step 6: Final answer
    x = 2,107.22

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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.