Home / 2,630.46-3,942.95-1,069.85

Finding the Fourth Proportional to 2,630.46, 3,942.95 and 1,069.85

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Solution

The fourth proportional to 2,630.46, 3,942.95 and 1,069.85 is: 1,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.46 : 3,942.95 = 1,069.85 : x
  2. Step 2: Convert to fraction form
    2,630.46/3,942.95 = 1,069.85/x
  3. Step 3: Cross multiply
    2,630.46x = 3,942.95 × 1,069.85
  4. Step 4: Simplify right side
    2,630.46x = 4,218,339.99
  5. Step 5: Solve for x
    x = 4,218,339.99/2,630.46
  6. Step 6: Final answer
    x = 1,603.65

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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.