Home / 3,946.31-5,919.73-1,313.71

Finding the Fourth Proportional to 3,946.31, 5,919.73 and 1,313.71

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Solution

The fourth proportional to 3,946.31, 5,919.73 and 1,313.71 is: 1,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.31 : 5,919.73 = 1,313.71 : x
  2. Step 2: Convert to fraction form
    3,946.31/5,919.73 = 1,313.71/x
  3. Step 3: Cross multiply
    3,946.31x = 5,919.73 × 1,313.71
  4. Step 4: Simplify right side
    3,946.31x = 7,776,790.41
  5. Step 5: Solve for x
    x = 7,776,790.41/3,946.31
  6. Step 6: Final answer
    x = 1,970.65

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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.