Home / 6,207.20-9,310.80-3,128.48

Finding the Fourth Proportional to 6,207.20, 9,310.80 and 3,128.48

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Solution

The fourth proportional to 6,207.20, 9,310.80 and 3,128.48 is: 4,692.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,207.20 : 9,310.80 = 3,128.48 : x
  2. Step 2: Convert to fraction form
    6,207.20/9,310.80 = 3,128.48/x
  3. Step 3: Cross multiply
    6,207.20x = 9,310.80 × 3,128.48
  4. Step 4: Simplify right side
    6,207.20x = 29,128,651.58
  5. Step 5: Solve for x
    x = 29,128,651.58/6,207.20
  6. Step 6: Final answer
    x = 4,692.72

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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.