Home / 5,425.20-8,121.96-4,906.38

Finding the Fourth Proportional to 5,425.20, 8,121.96 and 4,906.38

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Solution

The fourth proportional to 5,425.20, 8,121.96 and 4,906.38 is: 7,345.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.20 : 8,121.96 = 4,906.38 : x
  2. Step 2: Convert to fraction form
    5,425.20/8,121.96 = 4,906.38/x
  3. Step 3: Cross multiply
    5,425.20x = 8,121.96 × 4,906.38
  4. Step 4: Simplify right side
    5,425.20x = 39,849,422.10
  5. Step 5: Solve for x
    x = 39,849,422.10/5,425.20
  6. Step 6: Final answer
    x = 7,345.24

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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.