Home / 2,650.59-3,975.95-702.79

Finding the Fourth Proportional to 2,650.59, 3,975.95 and 702.79

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Solution

The fourth proportional to 2,650.59, 3,975.95 and 702.79 is: 1,054.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.59 : 3,975.95 = 702.79 : x
  2. Step 2: Convert to fraction form
    2,650.59/3,975.95 = 702.79/x
  3. Step 3: Cross multiply
    2,650.59x = 3,975.95 × 702.79
  4. Step 4: Simplify right side
    2,650.59x = 2,794,257.90
  5. Step 5: Solve for x
    x = 2,794,257.90/2,650.59
  6. Step 6: Final answer
    x = 1,054.20

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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.