Home / 2,889-3,986.58-1,630.35

Finding the Fourth Proportional to 2,889, 3,986.58 and 1,630.35

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Solution

The fourth proportional to 2,889, 3,986.58 and 1,630.35 is: 2,249.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889 : 3,986.58 = 1,630.35 : x
  2. Step 2: Convert to fraction form
    2,889/3,986.58 = 1,630.35/x
  3. Step 3: Cross multiply
    2,889x = 3,986.58 × 1,630.35
  4. Step 4: Simplify right side
    2,889x = 6,499,520.70
  5. Step 5: Solve for x
    x = 6,499,520.70/2,889
  6. Step 6: Final answer
    x = 2,249.75

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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.