Home / 3,201.78-4,418.43-1,785.45

Finding the Fourth Proportional to 3,201.78, 4,418.43 and 1,785.45

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Solution

The fourth proportional to 3,201.78, 4,418.43 and 1,785.45 is: 2,463.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,201.78 : 4,418.43 = 1,785.45 : x
  2. Step 2: Convert to fraction form
    3,201.78/4,418.43 = 1,785.45/x
  3. Step 3: Cross multiply
    3,201.78x = 4,418.43 × 1,785.45
  4. Step 4: Simplify right side
    3,201.78x = 7,888,885.84
  5. Step 5: Solve for x
    x = 7,888,885.84/3,201.78
  6. Step 6: Final answer
    x = 2,463.91

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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.