Home / 3,081.78-4,253.16-1,887.54

Finding the Fourth Proportional to 3,081.78, 4,253.16 and 1,887.54

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Solution

The fourth proportional to 3,081.78, 4,253.16 and 1,887.54 is: 2,604.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.78 : 4,253.16 = 1,887.54 : x
  2. Step 2: Convert to fraction form
    3,081.78/4,253.16 = 1,887.54/x
  3. Step 3: Cross multiply
    3,081.78x = 4,253.16 × 1,887.54
  4. Step 4: Simplify right side
    3,081.78x = 8,028,009.63
  5. Step 5: Solve for x
    x = 8,028,009.63/3,081.78
  6. Step 6: Final answer
    x = 2,604.99

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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.