Home / 3,420.87-5,132.84-1,960.02

Finding the Fourth Proportional to 3,420.87, 5,132.84 and 1,960.02

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Solution

The fourth proportional to 3,420.87, 5,132.84 and 1,960.02 is: 2,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.87 : 5,132.84 = 1,960.02 : x
  2. Step 2: Convert to fraction form
    3,420.87/5,132.84 = 1,960.02/x
  3. Step 3: Cross multiply
    3,420.87x = 5,132.84 × 1,960.02
  4. Step 4: Simplify right side
    3,420.87x = 10,060,459.26
  5. Step 5: Solve for x
    x = 10,060,459.26/3,420.87
  6. Step 6: Final answer
    x = 2,940.91

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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.