Home / 3,768.40-5,197.80-2,651.68

Finding the Fourth Proportional to 3,768.40, 5,197.80 and 2,651.68

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Solution

The fourth proportional to 3,768.40, 5,197.80 and 2,651.68 is: 3,657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,768.40 : 5,197.80 = 2,651.68 : x
  2. Step 2: Convert to fraction form
    3,768.40/5,197.80 = 2,651.68/x
  3. Step 3: Cross multiply
    3,768.40x = 5,197.80 × 2,651.68
  4. Step 4: Simplify right side
    3,768.40x = 13,782,902.30
  5. Step 5: Solve for x
    x = 13,782,902.30/3,768.40
  6. Step 6: Final answer
    x = 3,657.49

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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.