Home / 7,621.12-11,431.82-3,460.36

Finding the Fourth Proportional to 7,621.12, 11,431.82 and 3,460.36

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Solution

The fourth proportional to 7,621.12, 11,431.82 and 3,460.36 is: 5,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.12 : 11,431.82 = 3,460.36 : x
  2. Step 2: Convert to fraction form
    7,621.12/11,431.82 = 3,460.36/x
  3. Step 3: Cross multiply
    7,621.12x = 11,431.82 × 3,460.36
  4. Step 4: Simplify right side
    7,621.12x = 39,558,212.66
  5. Step 5: Solve for x
    x = 39,558,212.66/7,621.12
  6. Step 6: Final answer
    x = 5,190.60

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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.