Home / 3,711.36-5,125.12-2,778.24

Finding the Fourth Proportional to 3,711.36, 5,125.12 and 2,778.24

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Solution

The fourth proportional to 3,711.36, 5,125.12 and 2,778.24 is: 3,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.36 : 5,125.12 = 2,778.24 : x
  2. Step 2: Convert to fraction form
    3,711.36/5,125.12 = 2,778.24/x
  3. Step 3: Cross multiply
    3,711.36x = 5,125.12 × 2,778.24
  4. Step 4: Simplify right side
    3,711.36x = 14,238,813.39
  5. Step 5: Solve for x
    x = 14,238,813.39/3,711.36
  6. Step 6: Final answer
    x = 3,836.55

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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.