Home / 3,076.30-4,614.40-767.80

Finding the Fourth Proportional to 3,076.30, 4,614.40 and 767.80

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Solution

The fourth proportional to 3,076.30, 4,614.40 and 767.80 is: 1,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.30 : 4,614.40 = 767.80 : x
  2. Step 2: Convert to fraction form
    3,076.30/4,614.40 = 767.80/x
  3. Step 3: Cross multiply
    3,076.30x = 4,614.40 × 767.80
  4. Step 4: Simplify right side
    3,076.30x = 3,542,936.32
  5. Step 5: Solve for x
    x = 3,542,936.32/3,076.30
  6. Step 6: Final answer
    x = 1,151.69

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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.