Home / 2,889-3,986.72-1,630.08

Finding the Fourth Proportional to 2,889, 3,986.72 and 1,630.08

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Solution

The fourth proportional to 2,889, 3,986.72 and 1,630.08 is: 2,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889 : 3,986.72 = 1,630.08 : x
  2. Step 2: Convert to fraction form
    2,889/3,986.72 = 1,630.08/x
  3. Step 3: Cross multiply
    2,889x = 3,986.72 × 1,630.08
  4. Step 4: Simplify right side
    2,889x = 6,498,664.39
  5. Step 5: Solve for x
    x = 6,498,664.39/2,889
  6. Step 6: Final answer
    x = 2,249.45

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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.