Home / 3,960.50-5,940.74-1,621.59

Finding the Fourth Proportional to 3,960.50, 5,940.74 and 1,621.59

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Solution

The fourth proportional to 3,960.50, 5,940.74 and 1,621.59 is: 2,432.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.50 : 5,940.74 = 1,621.59 : x
  2. Step 2: Convert to fraction form
    3,960.50/5,940.74 = 1,621.59/x
  3. Step 3: Cross multiply
    3,960.50x = 5,940.74 × 1,621.59
  4. Step 4: Simplify right side
    3,960.50x = 9,633,436.47
  5. Step 5: Solve for x
    x = 9,633,436.47/3,960.50
  6. Step 6: Final answer
    x = 2,432.38

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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.