Home / 2,135.88-3,203.20-1,354.72

Finding the Fourth Proportional to 2,135.88, 3,203.20 and 1,354.72

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Solution

The fourth proportional to 2,135.88, 3,203.20 and 1,354.72 is: 2,031.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.88 : 3,203.20 = 1,354.72 : x
  2. Step 2: Convert to fraction form
    2,135.88/3,203.20 = 1,354.72/x
  3. Step 3: Cross multiply
    2,135.88x = 3,203.20 × 1,354.72
  4. Step 4: Simplify right side
    2,135.88x = 4,339,439.10
  5. Step 5: Solve for x
    x = 4,339,439.10/2,135.88
  6. Step 6: Final answer
    x = 2,031.69

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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.