Home / 3,396.68-4,687.28-1,980.44

Finding the Fourth Proportional to 3,396.68, 4,687.28 and 1,980.44

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Solution

The fourth proportional to 3,396.68, 4,687.28 and 1,980.44 is: 2,732.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.68 : 4,687.28 = 1,980.44 : x
  2. Step 2: Convert to fraction form
    3,396.68/4,687.28 = 1,980.44/x
  3. Step 3: Cross multiply
    3,396.68x = 4,687.28 × 1,980.44
  4. Step 4: Simplify right side
    3,396.68x = 9,282,876.80
  5. Step 5: Solve for x
    x = 9,282,876.80/3,396.68
  6. Step 6: Final answer
    x = 2,732.93

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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.