Home / 3,710.50-5,121.09-2,138.32

Finding the Fourth Proportional to 3,710.50, 5,121.09 and 2,138.32

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Solution

The fourth proportional to 3,710.50, 5,121.09 and 2,138.32 is: 2,951.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.50 : 5,121.09 = 2,138.32 : x
  2. Step 2: Convert to fraction form
    3,710.50/5,121.09 = 2,138.32/x
  3. Step 3: Cross multiply
    3,710.50x = 5,121.09 × 2,138.32
  4. Step 4: Simplify right side
    3,710.50x = 10,950,529.17
  5. Step 5: Solve for x
    x = 10,950,529.17/3,710.50
  6. Step 6: Final answer
    x = 2,951.23

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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.