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Finding the Fourth Proportional to 2,092.70, 2,888.10 and 1,208.80

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Solution

The fourth proportional to 2,092.70, 2,888.10 and 1,208.80 is: 1,668.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.70 : 2,888.10 = 1,208.80 : x
  2. Step 2: Convert to fraction form
    2,092.70/2,888.10 = 1,208.80/x
  3. Step 3: Cross multiply
    2,092.70x = 2,888.10 × 1,208.80
  4. Step 4: Simplify right side
    2,092.70x = 3,491,135.28
  5. Step 5: Solve for x
    x = 3,491,135.28/2,092.70
  6. Step 6: Final answer
    x = 1,668.24

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1.5x scale

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.