Home / 2,288.49-3,155.88-1,392.36

Finding the Fourth Proportional to 2,288.49, 3,155.88 and 1,392.36

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Solution

The fourth proportional to 2,288.49, 3,155.88 and 1,392.36 is: 1,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.49 : 3,155.88 = 1,392.36 : x
  2. Step 2: Convert to fraction form
    2,288.49/3,155.88 = 1,392.36/x
  3. Step 3: Cross multiply
    2,288.49x = 3,155.88 × 1,392.36
  4. Step 4: Simplify right side
    2,288.49x = 4,394,121.08
  5. Step 5: Solve for x
    x = 4,394,121.08/2,288.49
  6. Step 6: Final answer
    x = 1,920.10

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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.