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Finding the Fourth Proportional to 2,891.93, 3,991.47 and 1,829.02

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Solution

The fourth proportional to 2,891.93, 3,991.47 and 1,829.02 is: 2,524.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.93 : 3,991.47 = 1,829.02 : x
  2. Step 2: Convert to fraction form
    2,891.93/3,991.47 = 1,829.02/x
  3. Step 3: Cross multiply
    2,891.93x = 3,991.47 × 1,829.02
  4. Step 4: Simplify right side
    2,891.93x = 7,300,478.46
  5. Step 5: Solve for x
    x = 7,300,478.46/2,891.93
  6. Step 6: Final answer
    x = 2,524.43

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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.