Home / 5,169.38-7,128.50-4,425.80

Finding the Fourth Proportional to 5,169.38, 7,128.50 and 4,425.80

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Solution

The fourth proportional to 5,169.38, 7,128.50 and 4,425.80 is: 6,103.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.38 : 7,128.50 = 4,425.80 : x
  2. Step 2: Convert to fraction form
    5,169.38/7,128.50 = 4,425.80/x
  3. Step 3: Cross multiply
    5,169.38x = 7,128.50 × 4,425.80
  4. Step 4: Simplify right side
    5,169.38x = 31,549,315.30
  5. Step 5: Solve for x
    x = 31,549,315.30/5,169.38
  6. Step 6: Final answer
    x = 6,103.11

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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.