Home / 5,179.74-7,148.16-2,821.92

Finding the Fourth Proportional to 5,179.74, 7,148.16 and 2,821.92

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Solution

The fourth proportional to 5,179.74, 7,148.16 and 2,821.92 is: 3,894.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.74 : 7,148.16 = 2,821.92 : x
  2. Step 2: Convert to fraction form
    5,179.74/7,148.16 = 2,821.92/x
  3. Step 3: Cross multiply
    5,179.74x = 7,148.16 × 2,821.92
  4. Step 4: Simplify right side
    5,179.74x = 20,171,535.67
  5. Step 5: Solve for x
    x = 20,171,535.67/5,179.74
  6. Step 6: Final answer
    x = 3,894.31

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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.