Home / 2,518.20-3,777.24-786.60

Finding the Fourth Proportional to 2,518.20, 3,777.24 and 786.60

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Solution

The fourth proportional to 2,518.20, 3,777.24 and 786.60 is: 1,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.20 : 3,777.24 = 786.60 : x
  2. Step 2: Convert to fraction form
    2,518.20/3,777.24 = 786.60/x
  3. Step 3: Cross multiply
    2,518.20x = 3,777.24 × 786.60
  4. Step 4: Simplify right side
    2,518.20x = 2,971,176.98
  5. Step 5: Solve for x
    x = 2,971,176.98/2,518.20
  6. Step 6: Final answer
    x = 1,179.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.