Home / 5,057.84-6,977.36-3,936.80

Finding the Fourth Proportional to 5,057.84, 6,977.36 and 3,936.80

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Solution

The fourth proportional to 5,057.84, 6,977.36 and 3,936.80 is: 5,430.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.84 : 6,977.36 = 3,936.80 : x
  2. Step 2: Convert to fraction form
    5,057.84/6,977.36 = 3,936.80/x
  3. Step 3: Cross multiply
    5,057.84x = 6,977.36 × 3,936.80
  4. Step 4: Simplify right side
    5,057.84x = 27,468,470.85
  5. Step 5: Solve for x
    x = 27,468,470.85/5,057.84
  6. Step 6: Final answer
    x = 5,430.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.