Home / 3,390.87-4,679.26-1,974.60

Finding the Fourth Proportional to 3,390.87, 4,679.26 and 1,974.60

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Solution

The fourth proportional to 3,390.87, 4,679.26 and 1,974.60 is: 2,724.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.87 : 4,679.26 = 1,974.60 : x
  2. Step 2: Convert to fraction form
    3,390.87/4,679.26 = 1,974.60/x
  3. Step 3: Cross multiply
    3,390.87x = 4,679.26 × 1,974.60
  4. Step 4: Simplify right side
    3,390.87x = 9,239,666.80
  5. Step 5: Solve for x
    x = 9,239,666.80/3,390.87
  6. Step 6: Final answer
    x = 2,724.87

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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.