Home / 2,389.97-3,299.07-1,395.57

Finding the Fourth Proportional to 2,389.97, 3,299.07 and 1,395.57

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Solution

The fourth proportional to 2,389.97, 3,299.07 and 1,395.57 is: 1,926.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.97 : 3,299.07 = 1,395.57 : x
  2. Step 2: Convert to fraction form
    2,389.97/3,299.07 = 1,395.57/x
  3. Step 3: Cross multiply
    2,389.97x = 3,299.07 × 1,395.57
  4. Step 4: Simplify right side
    2,389.97x = 4,604,083.12
  5. Step 5: Solve for x
    x = 4,604,083.12/2,389.97
  6. Step 6: Final answer
    x = 1,926.42

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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.