Home / 5,390.20-8,072.32-3,653.56

Finding the Fourth Proportional to 5,390.20, 8,072.32 and 3,653.56

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Solution

The fourth proportional to 5,390.20, 8,072.32 and 3,653.56 is: 5,471.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.20 : 8,072.32 = 3,653.56 : x
  2. Step 2: Convert to fraction form
    5,390.20/8,072.32 = 3,653.56/x
  3. Step 3: Cross multiply
    5,390.20x = 8,072.32 × 3,653.56
  4. Step 4: Simplify right side
    5,390.20x = 29,492,705.46
  5. Step 5: Solve for x
    x = 29,492,705.46/5,390.20
  6. Step 6: Final answer
    x = 5,471.54

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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.