Home / 6,488.20-9,734.70-2,105.80

Finding the Fourth Proportional to 6,488.20, 9,734.70 and 2,105.80

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Solution

The fourth proportional to 6,488.20, 9,734.70 and 2,105.80 is: 3,159.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.20 : 9,734.70 = 2,105.80 : x
  2. Step 2: Convert to fraction form
    6,488.20/9,734.70 = 2,105.80/x
  3. Step 3: Cross multiply
    6,488.20x = 9,734.70 × 2,105.80
  4. Step 4: Simplify right side
    6,488.20x = 20,499,331.26
  5. Step 5: Solve for x
    x = 20,499,331.26/6,488.20
  6. Step 6: Final answer
    x = 3,159.48

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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.