Home / 2,389.38-3,583.44-1,072.40

Finding the Fourth Proportional to 2,389.38, 3,583.44 and 1,072.40

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Solution

The fourth proportional to 2,389.38, 3,583.44 and 1,072.40 is: 1,608.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.38 : 3,583.44 = 1,072.40 : x
  2. Step 2: Convert to fraction form
    2,389.38/3,583.44 = 1,072.40/x
  3. Step 3: Cross multiply
    2,389.38x = 3,583.44 × 1,072.40
  4. Step 4: Simplify right side
    2,389.38x = 3,842,869.05
  5. Step 5: Solve for x
    x = 3,842,869.05/2,389.38
  6. Step 6: Final answer
    x = 1,608.31

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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.