Home / 2,630.21-3,949.20-1,758.15

Finding the Fourth Proportional to 2,630.21, 3,949.20 and 1,758.15

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Solution

The fourth proportional to 2,630.21, 3,949.20 and 1,758.15 is: 2,639.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.21 : 3,949.20 = 1,758.15 : x
  2. Step 2: Convert to fraction form
    2,630.21/3,949.20 = 1,758.15/x
  3. Step 3: Cross multiply
    2,630.21x = 3,949.20 × 1,758.15
  4. Step 4: Simplify right side
    2,630.21x = 6,943,285.98
  5. Step 5: Solve for x
    x = 6,943,285.98/2,630.21
  6. Step 6: Final answer
    x = 2,639.83

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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.