Home / 2,166.86-2,990.26-1,172.13

Finding the Fourth Proportional to 2,166.86, 2,990.26 and 1,172.13

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Solution

The fourth proportional to 2,166.86, 2,990.26 and 1,172.13 is: 1,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.86 : 2,990.26 = 1,172.13 : x
  2. Step 2: Convert to fraction form
    2,166.86/2,990.26 = 1,172.13/x
  3. Step 3: Cross multiply
    2,166.86x = 2,990.26 × 1,172.13
  4. Step 4: Simplify right side
    2,166.86x = 3,504,980.93
  5. Step 5: Solve for x
    x = 3,504,980.93/2,166.86
  6. Step 6: Final answer
    x = 1,617.54

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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.