Home / 5,428.44-8,137.13-2,140.20

Finding the Fourth Proportional to 5,428.44, 8,137.13 and 2,140.20

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Solution

The fourth proportional to 5,428.44, 8,137.13 and 2,140.20 is: 3,208.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.44 : 8,137.13 = 2,140.20 : x
  2. Step 2: Convert to fraction form
    5,428.44/8,137.13 = 2,140.20/x
  3. Step 3: Cross multiply
    5,428.44x = 8,137.13 × 2,140.20
  4. Step 4: Simplify right side
    5,428.44x = 17,415,074.93
  5. Step 5: Solve for x
    x = 17,415,074.93/5,428.44
  6. Step 6: Final answer
    x = 3,208.12

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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.