Home / 3,710.70-5,121.35-2,219.78

Finding the Fourth Proportional to 3,710.70, 5,121.35 and 2,219.78

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Solution

The fourth proportional to 3,710.70, 5,121.35 and 2,219.78 is: 3,063.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.70 : 5,121.35 = 2,219.78 : x
  2. Step 2: Convert to fraction form
    3,710.70/5,121.35 = 2,219.78/x
  3. Step 3: Cross multiply
    3,710.70x = 5,121.35 × 2,219.78
  4. Step 4: Simplify right side
    3,710.70x = 11,368,270.30
  5. Step 5: Solve for x
    x = 11,368,270.30/3,710.70
  6. Step 6: Final answer
    x = 3,063.65

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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.