Home / 2,889.39-3,986.70-1,630.38

Finding the Fourth Proportional to 2,889.39, 3,986.70 and 1,630.38

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Solution

The fourth proportional to 2,889.39, 3,986.70 and 1,630.38 is: 2,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.39 : 3,986.70 = 1,630.38 : x
  2. Step 2: Convert to fraction form
    2,889.39/3,986.70 = 1,630.38/x
  3. Step 3: Cross multiply
    2,889.39x = 3,986.70 × 1,630.38
  4. Step 4: Simplify right side
    2,889.39x = 6,499,835.95
  5. Step 5: Solve for x
    x = 6,499,835.95/2,889.39
  6. Step 6: Final answer
    x = 2,249.55

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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.