Home / 3,945.96-5,919.66-1,972.62

Finding the Fourth Proportional to 3,945.96, 5,919.66 and 1,972.62

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Solution

The fourth proportional to 3,945.96, 5,919.66 and 1,972.62 is: 2,959.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.96 : 5,919.66 = 1,972.62 : x
  2. Step 2: Convert to fraction form
    3,945.96/5,919.66 = 1,972.62/x
  3. Step 3: Cross multiply
    3,945.96x = 5,919.66 × 1,972.62
  4. Step 4: Simplify right side
    3,945.96x = 11,677,239.71
  5. Step 5: Solve for x
    x = 11,677,239.71/3,945.96
  6. Step 6: Final answer
    x = 2,959.29

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1.5x scale

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.