Home / 2,651.76-3,977.64-1,786.68

Finding the Fourth Proportional to 2,651.76, 3,977.64 and 1,786.68

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Solution

The fourth proportional to 2,651.76, 3,977.64 and 1,786.68 is: 2,680.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.76 : 3,977.64 = 1,786.68 : x
  2. Step 2: Convert to fraction form
    2,651.76/3,977.64 = 1,786.68/x
  3. Step 3: Cross multiply
    2,651.76x = 3,977.64 × 1,786.68
  4. Step 4: Simplify right side
    2,651.76x = 7,106,769.84
  5. Step 5: Solve for x
    x = 7,106,769.84/2,651.76
  6. Step 6: Final answer
    x = 2,680.02

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Similar ratio
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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.