Home / 3,380.76-5,071.14-1,920.60

Finding the Fourth Proportional to 3,380.76, 5,071.14 and 1,920.60

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Solution

The fourth proportional to 3,380.76, 5,071.14 and 1,920.60 is: 2,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.76 : 5,071.14 = 1,920.60 : x
  2. Step 2: Convert to fraction form
    3,380.76/5,071.14 = 1,920.60/x
  3. Step 3: Cross multiply
    3,380.76x = 5,071.14 × 1,920.60
  4. Step 4: Simplify right side
    3,380.76x = 9,739,631.48
  5. Step 5: Solve for x
    x = 9,739,631.48/3,380.76
  6. Step 6: Final answer
    x = 2,880.90

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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.