Home / 5,456.57-8,172.55-3,605.13

Finding the Fourth Proportional to 5,456.57, 8,172.55 and 3,605.13

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Solution

The fourth proportional to 5,456.57, 8,172.55 and 3,605.13 is: 5,399.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.57 : 8,172.55 = 3,605.13 : x
  2. Step 2: Convert to fraction form
    5,456.57/8,172.55 = 3,605.13/x
  3. Step 3: Cross multiply
    5,456.57x = 8,172.55 × 3,605.13
  4. Step 4: Simplify right side
    5,456.57x = 29,463,112.39
  5. Step 5: Solve for x
    x = 29,463,112.39/5,456.57
  6. Step 6: Final answer
    x = 5,399.57

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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.