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Finding the Fourth Proportional to 2,163.24, 3,245.02 and 702.20

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Solution

The fourth proportional to 2,163.24, 3,245.02 and 702.20 is: 1,053.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.24 : 3,245.02 = 702.20 : x
  2. Step 2: Convert to fraction form
    2,163.24/3,245.02 = 702.20/x
  3. Step 3: Cross multiply
    2,163.24x = 3,245.02 × 702.20
  4. Step 4: Simplify right side
    2,163.24x = 2,278,653.04
  5. Step 5: Solve for x
    x = 2,278,653.04/2,163.24
  6. Step 6: Final answer
    x = 1,053.35

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1.5x scale

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.