Home / 2,629.71-3,944.55-780.84

Finding the Fourth Proportional to 2,629.71, 3,944.55 and 780.84

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Solution

The fourth proportional to 2,629.71, 3,944.55 and 780.84 is: 1,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.71 : 3,944.55 = 780.84 : x
  2. Step 2: Convert to fraction form
    2,629.71/3,944.55 = 780.84/x
  3. Step 3: Cross multiply
    2,629.71x = 3,944.55 × 780.84
  4. Step 4: Simplify right side
    2,629.71x = 3,080,062.42
  5. Step 5: Solve for x
    x = 3,080,062.42/2,629.71
  6. Step 6: Final answer
    x = 1,171.26

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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.