Home / 3,920.80-5,875.84-1,974.36

Finding the Fourth Proportional to 3,920.80, 5,875.84 and 1,974.36

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Solution

The fourth proportional to 3,920.80, 5,875.84 and 1,974.36 is: 2,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.80 : 5,875.84 = 1,974.36 : x
  2. Step 2: Convert to fraction form
    3,920.80/5,875.84 = 1,974.36/x
  3. Step 3: Cross multiply
    3,920.80x = 5,875.84 × 1,974.36
  4. Step 4: Simplify right side
    3,920.80x = 11,601,023.46
  5. Step 5: Solve for x
    x = 11,601,023.46/3,920.80
  6. Step 6: Final answer
    x = 2,958.84

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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.