Home / 2,668.10-4,002.15-1,691.30

Finding the Fourth Proportional to 2,668.10, 4,002.15 and 1,691.30

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Solution

The fourth proportional to 2,668.10, 4,002.15 and 1,691.30 is: 2,536.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.10 : 4,002.15 = 1,691.30 : x
  2. Step 2: Convert to fraction form
    2,668.10/4,002.15 = 1,691.30/x
  3. Step 3: Cross multiply
    2,668.10x = 4,002.15 × 1,691.30
  4. Step 4: Simplify right side
    2,668.10x = 6,768,836.30
  5. Step 5: Solve for x
    x = 6,768,836.30/2,668.10
  6. Step 6: Final answer
    x = 2,536.95

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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.