Home / 4,920.55-6,792.82-3,129.83

Finding the Fourth Proportional to 4,920.55, 6,792.82 and 3,129.83

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Solution

The fourth proportional to 4,920.55, 6,792.82 and 3,129.83 is: 4,320.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.55 : 6,792.82 = 3,129.83 : x
  2. Step 2: Convert to fraction form
    4,920.55/6,792.82 = 3,129.83/x
  3. Step 3: Cross multiply
    4,920.55x = 6,792.82 × 3,129.83
  4. Step 4: Simplify right side
    4,920.55x = 21,260,371.82
  5. Step 5: Solve for x
    x = 21,260,371.82/4,920.55
  6. Step 6: Final answer
    x = 4,320.73

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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.