Home / 3,665.66-5,058.48-2,172.69

Finding the Fourth Proportional to 3,665.66, 5,058.48 and 2,172.69

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Solution

The fourth proportional to 3,665.66, 5,058.48 and 2,172.69 is: 2,998.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665.66 : 5,058.48 = 2,172.69 : x
  2. Step 2: Convert to fraction form
    3,665.66/5,058.48 = 2,172.69/x
  3. Step 3: Cross multiply
    3,665.66x = 5,058.48 × 2,172.69
  4. Step 4: Simplify right side
    3,665.66x = 10,990,485.87
  5. Step 5: Solve for x
    x = 10,990,485.87/3,665.66
  6. Step 6: Final answer
    x = 2,998.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.