Home / 2,163.20-3,244.80-702.40

Finding the Fourth Proportional to 2,163.20, 3,244.80 and 702.40

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Solution

The fourth proportional to 2,163.20, 3,244.80 and 702.40 is: 1,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.20 : 3,244.80 = 702.40 : x
  2. Step 2: Convert to fraction form
    2,163.20/3,244.80 = 702.40/x
  3. Step 3: Cross multiply
    2,163.20x = 3,244.80 × 702.40
  4. Step 4: Simplify right side
    2,163.20x = 2,279,147.52
  5. Step 5: Solve for x
    x = 2,279,147.52/2,163.20
  6. Step 6: Final answer
    x = 1,053.60

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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.