Home / 7,144.26-9,859.35-4,000.38

Finding the Fourth Proportional to 7,144.26, 9,859.35 and 4,000.38

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Solution

The fourth proportional to 7,144.26, 9,859.35 and 4,000.38 is: 5,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.26 : 9,859.35 = 4,000.38 : x
  2. Step 2: Convert to fraction form
    7,144.26/9,859.35 = 4,000.38/x
  3. Step 3: Cross multiply
    7,144.26x = 9,859.35 × 4,000.38
  4. Step 4: Simplify right side
    7,144.26x = 39,441,146.55
  5. Step 5: Solve for x
    x = 39,441,146.55/7,144.26
  6. Step 6: Final answer
    x = 5,520.68

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Half scale
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Double scale
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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.