Home / 3,960.70-5,941.36-1,328.21

Finding the Fourth Proportional to 3,960.70, 5,941.36 and 1,328.21

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Solution

The fourth proportional to 3,960.70, 5,941.36 and 1,328.21 is: 1,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.70 : 5,941.36 = 1,328.21 : x
  2. Step 2: Convert to fraction form
    3,960.70/5,941.36 = 1,328.21/x
  3. Step 3: Cross multiply
    3,960.70x = 5,941.36 × 1,328.21
  4. Step 4: Simplify right side
    3,960.70x = 7,891,373.77
  5. Step 5: Solve for x
    x = 7,891,373.77/3,960.70
  6. Step 6: Final answer
    x = 1,992.42

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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.