Home / 3,418.83-5,128.76-1,228.07

Finding the Fourth Proportional to 3,418.83, 5,128.76 and 1,228.07

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Solution

The fourth proportional to 3,418.83, 5,128.76 and 1,228.07 is: 1,842.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.83 : 5,128.76 = 1,228.07 : x
  2. Step 2: Convert to fraction form
    3,418.83/5,128.76 = 1,228.07/x
  3. Step 3: Cross multiply
    3,418.83x = 5,128.76 × 1,228.07
  4. Step 4: Simplify right side
    3,418.83x = 6,298,492.19
  5. Step 5: Solve for x
    x = 6,298,492.19/3,418.83
  6. Step 6: Final answer
    x = 1,842.29

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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.