Home / 7,180.12-10,771.89-3,478.02

Finding the Fourth Proportional to 7,180.12, 10,771.89 and 3,478.02

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Solution

The fourth proportional to 7,180.12, 10,771.89 and 3,478.02 is: 5,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.12 : 10,771.89 = 3,478.02 : x
  2. Step 2: Convert to fraction form
    7,180.12/10,771.89 = 3,478.02/x
  3. Step 3: Cross multiply
    7,180.12x = 10,771.89 × 3,478.02
  4. Step 4: Simplify right side
    7,180.12x = 37,464,848.44
  5. Step 5: Solve for x
    x = 37,464,848.44/7,180.12
  6. Step 6: Final answer
    x = 5,217.86

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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.