Home / 3,778.80-5,216.58-2,520.60

Finding the Fourth Proportional to 3,778.80, 5,216.58 and 2,520.60

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Solution

The fourth proportional to 3,778.80, 5,216.58 and 2,520.60 is: 3,479.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.80 : 5,216.58 = 2,520.60 : x
  2. Step 2: Convert to fraction form
    3,778.80/5,216.58 = 2,520.60/x
  3. Step 3: Cross multiply
    3,778.80x = 5,216.58 × 2,520.60
  4. Step 4: Simplify right side
    3,778.80x = 13,148,911.55
  5. Step 5: Solve for x
    x = 13,148,911.55/3,778.80
  6. Step 6: Final answer
    x = 3,479.65

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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.