Home / 4,121.29-6,180.48-1,781.20

Finding the Fourth Proportional to 4,121.29, 6,180.48 and 1,781.20

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Solution

The fourth proportional to 4,121.29, 6,180.48 and 1,781.20 is: 2,671.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.29 : 6,180.48 = 1,781.20 : x
  2. Step 2: Convert to fraction form
    4,121.29/6,180.48 = 1,781.20/x
  3. Step 3: Cross multiply
    4,121.29x = 6,180.48 × 1,781.20
  4. Step 4: Simplify right side
    4,121.29x = 11,008,670.98
  5. Step 5: Solve for x
    x = 11,008,670.98/4,121.29
  6. Step 6: Final answer
    x = 2,671.17

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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.