Home / 3,947.79-5,920.65-1,173.71

Finding the Fourth Proportional to 3,947.79, 5,920.65 and 1,173.71

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Solution

The fourth proportional to 3,947.79, 5,920.65 and 1,173.71 is: 1,760.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.79 : 5,920.65 = 1,173.71 : x
  2. Step 2: Convert to fraction form
    3,947.79/5,920.65 = 1,173.71/x
  3. Step 3: Cross multiply
    3,947.79x = 5,920.65 × 1,173.71
  4. Step 4: Simplify right side
    3,947.79x = 6,949,140.91
  5. Step 5: Solve for x
    x = 6,949,140.91/3,947.79
  6. Step 6: Final answer
    x = 1,760.26

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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.