Home / 2,830.79-3,906.36-1,571.92

Finding the Fourth Proportional to 2,830.79, 3,906.36 and 1,571.92

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Solution

The fourth proportional to 2,830.79, 3,906.36 and 1,571.92 is: 2,169.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.79 : 3,906.36 = 1,571.92 : x
  2. Step 2: Convert to fraction form
    2,830.79/3,906.36 = 1,571.92/x
  3. Step 3: Cross multiply
    2,830.79x = 3,906.36 × 1,571.92
  4. Step 4: Simplify right side
    2,830.79x = 6,140,496.36
  5. Step 5: Solve for x
    x = 6,140,496.36/2,830.79
  6. Step 6: Final answer
    x = 2,169.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.