Home / 2,630.45-3,947.97-1,071.30

Finding the Fourth Proportional to 2,630.45, 3,947.97 and 1,071.30

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Solution

The fourth proportional to 2,630.45, 3,947.97 and 1,071.30 is: 1,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.45 : 3,947.97 = 1,071.30 : x
  2. Step 2: Convert to fraction form
    2,630.45/3,947.97 = 1,071.30/x
  3. Step 3: Cross multiply
    2,630.45x = 3,947.97 × 1,071.30
  4. Step 4: Simplify right side
    2,630.45x = 4,229,454.90
  5. Step 5: Solve for x
    x = 4,229,454.90/2,630.45
  6. Step 6: Final answer
    x = 1,607.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.