Home / 1,550.09-2,137.51-1,078.54

Finding the Fourth Proportional to 1,550.09, 2,137.51 and 1,078.54

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Solution

The fourth proportional to 1,550.09, 2,137.51 and 1,078.54 is: 1,487.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.09 : 2,137.51 = 1,078.54 : x
  2. Step 2: Convert to fraction form
    1,550.09/2,137.51 = 1,078.54/x
  3. Step 3: Cross multiply
    1,550.09x = 2,137.51 × 1,078.54
  4. Step 4: Simplify right side
    1,550.09x = 2,305,390.04
  5. Step 5: Solve for x
    x = 2,305,390.04/1,550.09
  6. Step 6: Final answer
    x = 1,487.26

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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.