Home / 3,356.34-5,029.62-2,120.70

Finding the Fourth Proportional to 3,356.34, 5,029.62 and 2,120.70

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Solution

The fourth proportional to 3,356.34, 5,029.62 and 2,120.70 is: 3,177.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,356.34 : 5,029.62 = 2,120.70 : x
  2. Step 2: Convert to fraction form
    3,356.34/5,029.62 = 2,120.70/x
  3. Step 3: Cross multiply
    3,356.34x = 5,029.62 × 2,120.70
  4. Step 4: Simplify right side
    3,356.34x = 10,666,315.13
  5. Step 5: Solve for x
    x = 10,666,315.13/3,356.34
  6. Step 6: Final answer
    x = 3,177.96

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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.