Home / 2,166.13-2,988.25-1,369.09

Finding the Fourth Proportional to 2,166.13, 2,988.25 and 1,369.09

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Solution

The fourth proportional to 2,166.13, 2,988.25 and 1,369.09 is: 1,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.13 : 2,988.25 = 1,369.09 : x
  2. Step 2: Convert to fraction form
    2,166.13/2,988.25 = 1,369.09/x
  3. Step 3: Cross multiply
    2,166.13x = 2,988.25 × 1,369.09
  4. Step 4: Simplify right side
    2,166.13x = 4,091,183.19
  5. Step 5: Solve for x
    x = 4,091,183.19/2,166.13
  6. Step 6: Final answer
    x = 1,888.71

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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.