Home / 7,128.30-9,836.96-4,144.26

Finding the Fourth Proportional to 7,128.30, 9,836.96 and 4,144.26

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Solution

The fourth proportional to 7,128.30, 9,836.96 and 4,144.26 is: 5,719.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.30 : 9,836.96 = 4,144.26 : x
  2. Step 2: Convert to fraction form
    7,128.30/9,836.96 = 4,144.26/x
  3. Step 3: Cross multiply
    7,128.30x = 9,836.96 × 4,144.26
  4. Step 4: Simplify right side
    7,128.30x = 40,766,919.85
  5. Step 5: Solve for x
    x = 40,766,919.85/7,128.30
  6. Step 6: Final answer
    x = 5,719.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.