Home / 3,778.87-5,213.16-2,518.70

Finding the Fourth Proportional to 3,778.87, 5,213.16 and 2,518.70

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Solution

The fourth proportional to 3,778.87, 5,213.16 and 2,518.70 is: 3,474.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.87 : 5,213.16 = 2,518.70 : x
  2. Step 2: Convert to fraction form
    3,778.87/5,213.16 = 2,518.70/x
  3. Step 3: Cross multiply
    3,778.87x = 5,213.16 × 2,518.70
  4. Step 4: Simplify right side
    3,778.87x = 13,130,360.03
  5. Step 5: Solve for x
    x = 13,130,360.03/3,778.87
  6. Step 6: Final answer
    x = 3,474.68

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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.