Home / 3,355.53-5,030.66-2,120.34

Finding the Fourth Proportional to 3,355.53, 5,030.66 and 2,120.34

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Solution

The fourth proportional to 3,355.53, 5,030.66 and 2,120.34 is: 3,178.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.53 : 5,030.66 = 2,120.34 : x
  2. Step 2: Convert to fraction form
    3,355.53/5,030.66 = 2,120.34/x
  3. Step 3: Cross multiply
    3,355.53x = 5,030.66 × 2,120.34
  4. Step 4: Simplify right side
    3,355.53x = 10,666,709.62
  5. Step 5: Solve for x
    x = 10,666,709.62/3,355.53
  6. Step 6: Final answer
    x = 3,178.84

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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.