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Finding the Fourth Proportional to 2,888.82, 3,986.55 and 1,629.89

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Solution

The fourth proportional to 2,888.82, 3,986.55 and 1,629.89 is: 2,249.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.82 : 3,986.55 = 1,629.89 : x
  2. Step 2: Convert to fraction form
    2,888.82/3,986.55 = 1,629.89/x
  3. Step 3: Cross multiply
    2,888.82x = 3,986.55 × 1,629.89
  4. Step 4: Simplify right side
    2,888.82x = 6,497,618.05
  5. Step 5: Solve for x
    x = 6,497,618.05/2,888.82
  6. Step 6: Final answer
    x = 2,249.23

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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.