Home / 2,629.01-3,944.14-780.14

Finding the Fourth Proportional to 2,629.01, 3,944.14 and 780.14

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Solution

The fourth proportional to 2,629.01, 3,944.14 and 780.14 is: 1,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.01 : 3,944.14 = 780.14 : x
  2. Step 2: Convert to fraction form
    2,629.01/3,944.14 = 780.14/x
  3. Step 3: Cross multiply
    2,629.01x = 3,944.14 × 780.14
  4. Step 4: Simplify right side
    2,629.01x = 3,076,977.48
  5. Step 5: Solve for x
    x = 3,076,977.48/2,629.01
  6. Step 6: Final answer
    x = 1,170.39

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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.