Home / 2,629.38-3,944.08-780.50

Finding the Fourth Proportional to 2,629.38, 3,944.08 and 780.50

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Solution

The fourth proportional to 2,629.38, 3,944.08 and 780.50 is: 1,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.38 : 3,944.08 = 780.50 : x
  2. Step 2: Convert to fraction form
    2,629.38/3,944.08 = 780.50/x
  3. Step 3: Cross multiply
    2,629.38x = 3,944.08 × 780.50
  4. Step 4: Simplify right side
    2,629.38x = 3,078,362.35
  5. Step 5: Solve for x
    x = 3,078,362.35/2,629.38
  6. Step 6: Final answer
    x = 1,170.76

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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.