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Finding the Fourth Proportional to 2,668.95, 4,004.91 and 1,108.62

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Solution

The fourth proportional to 2,668.95, 4,004.91 and 1,108.62 is: 1,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.95 : 4,004.91 = 1,108.62 : x
  2. Step 2: Convert to fraction form
    2,668.95/4,004.91 = 1,108.62/x
  3. Step 3: Cross multiply
    2,668.95x = 4,004.91 × 1,108.62
  4. Step 4: Simplify right side
    2,668.95x = 4,439,923.32
  5. Step 5: Solve for x
    x = 4,439,923.32/2,668.95
  6. Step 6: Final answer
    x = 1,663.55

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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.