Home / 6,128.90-9,199.11-3,209.30

Finding the Fourth Proportional to 6,128.90, 9,199.11 and 3,209.30

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Solution

The fourth proportional to 6,128.90, 9,199.11 and 3,209.30 is: 4,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.90 : 9,199.11 = 3,209.30 : x
  2. Step 2: Convert to fraction form
    6,128.90/9,199.11 = 3,209.30/x
  3. Step 3: Cross multiply
    6,128.90x = 9,199.11 × 3,209.30
  4. Step 4: Simplify right side
    6,128.90x = 29,522,703.72
  5. Step 5: Solve for x
    x = 29,522,703.72/6,128.90
  6. Step 6: Final answer
    x = 4,816.97

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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.