Home / 5,179.79-7,148.09-2,821.92

Finding the Fourth Proportional to 5,179.79, 7,148.09 and 2,821.92

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Solution

The fourth proportional to 5,179.79, 7,148.09 and 2,821.92 is: 3,894.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.79 : 7,148.09 = 2,821.92 : x
  2. Step 2: Convert to fraction form
    5,179.79/7,148.09 = 2,821.92/x
  3. Step 3: Cross multiply
    5,179.79x = 7,148.09 × 2,821.92
  4. Step 4: Simplify right side
    5,179.79x = 20,171,338.13
  5. Step 5: Solve for x
    x = 20,171,338.13/5,179.79
  6. Step 6: Final answer
    x = 3,894.24

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1.5x scale

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.