Home / 1,941.24-2,911.82-480.40

Finding the Fourth Proportional to 1,941.24, 2,911.82 and 480.40

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Solution

The fourth proportional to 1,941.24, 2,911.82 and 480.40 is: 720.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.24 : 2,911.82 = 480.40 : x
  2. Step 2: Convert to fraction form
    1,941.24/2,911.82 = 480.40/x
  3. Step 3: Cross multiply
    1,941.24x = 2,911.82 × 480.40
  4. Step 4: Simplify right side
    1,941.24x = 1,398,838.33
  5. Step 5: Solve for x
    x = 1,398,838.33/1,941.24
  6. Step 6: Final answer
    x = 720.59

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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.