Home / 7,144.44-9,858.78-4,000.20

Finding the Fourth Proportional to 7,144.44, 9,858.78 and 4,000.20

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Solution

The fourth proportional to 7,144.44, 9,858.78 and 4,000.20 is: 5,519.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.44 : 9,858.78 = 4,000.20 : x
  2. Step 2: Convert to fraction form
    7,144.44/9,858.78 = 4,000.20/x
  3. Step 3: Cross multiply
    7,144.44x = 9,858.78 × 4,000.20
  4. Step 4: Simplify right side
    7,144.44x = 39,437,091.76
  5. Step 5: Solve for x
    x = 39,437,091.76/7,144.44
  6. Step 6: Final answer
    x = 5,519.97

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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.