Home / 2,774.78-4,161.36-1,313.54

Finding the Fourth Proportional to 2,774.78, 4,161.36 and 1,313.54

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Solution

The fourth proportional to 2,774.78, 4,161.36 and 1,313.54 is: 1,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.78 : 4,161.36 = 1,313.54 : x
  2. Step 2: Convert to fraction form
    2,774.78/4,161.36 = 1,313.54/x
  3. Step 3: Cross multiply
    2,774.78x = 4,161.36 × 1,313.54
  4. Step 4: Simplify right side
    2,774.78x = 5,466,112.81
  5. Step 5: Solve for x
    x = 5,466,112.81/2,774.78
  6. Step 6: Final answer
    x = 1,969.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.