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Finding the Fourth Proportional to 1,891.59, 2,610.19 and 1,135.22

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Solution

The fourth proportional to 1,891.59, 2,610.19 and 1,135.22 is: 1,566.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.59 : 2,610.19 = 1,135.22 : x
  2. Step 2: Convert to fraction form
    1,891.59/2,610.19 = 1,135.22/x
  3. Step 3: Cross multiply
    1,891.59x = 2,610.19 × 1,135.22
  4. Step 4: Simplify right side
    1,891.59x = 2,963,136.56
  5. Step 5: Solve for x
    x = 2,963,136.56/1,891.59
  6. Step 6: Final answer
    x = 1,566.48

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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.