Home / 2,389.78-3,297.61-1,394.94

Finding the Fourth Proportional to 2,389.78, 3,297.61 and 1,394.94

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Solution

The fourth proportional to 2,389.78, 3,297.61 and 1,394.94 is: 1,924.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.78 : 3,297.61 = 1,394.94 : x
  2. Step 2: Convert to fraction form
    2,389.78/3,297.61 = 1,394.94/x
  3. Step 3: Cross multiply
    2,389.78x = 3,297.61 × 1,394.94
  4. Step 4: Simplify right side
    2,389.78x = 4,599,968.09
  5. Step 5: Solve for x
    x = 4,599,968.09/2,389.78
  6. Step 6: Final answer
    x = 1,924.85

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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.