Home / 3,418.40-4,717.32-2,021.60

Finding the Fourth Proportional to 3,418.40, 4,717.32 and 2,021.60

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Solution

The fourth proportional to 3,418.40, 4,717.32 and 2,021.60 is: 2,789.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.40 : 4,717.32 = 2,021.60 : x
  2. Step 2: Convert to fraction form
    3,418.40/4,717.32 = 2,021.60/x
  3. Step 3: Cross multiply
    3,418.40x = 4,717.32 × 2,021.60
  4. Step 4: Simplify right side
    3,418.40x = 9,536,534.11
  5. Step 5: Solve for x
    x = 9,536,534.11/3,418.40
  6. Step 6: Final answer
    x = 2,789.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.