Home / 1,941.18-2,911.77-480.36

Finding the Fourth Proportional to 1,941.18, 2,911.77 and 480.36

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Solution

The fourth proportional to 1,941.18, 2,911.77 and 480.36 is: 720.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.18 : 2,911.77 = 480.36 : x
  2. Step 2: Convert to fraction form
    1,941.18/2,911.77 = 480.36/x
  3. Step 3: Cross multiply
    1,941.18x = 2,911.77 × 480.36
  4. Step 4: Simplify right side
    1,941.18x = 1,398,697.84
  5. Step 5: Solve for x
    x = 1,398,697.84/1,941.18
  6. Step 6: Final answer
    x = 720.54

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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.