Home / 3,201.78-4,417.68-1,804.56

Finding the Fourth Proportional to 3,201.78, 4,417.68 and 1,804.56

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Solution

The fourth proportional to 3,201.78, 4,417.68 and 1,804.56 is: 2,489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,201.78 : 4,417.68 = 1,804.56 : x
  2. Step 2: Convert to fraction form
    3,201.78/4,417.68 = 1,804.56/x
  3. Step 3: Cross multiply
    3,201.78x = 4,417.68 × 1,804.56
  4. Step 4: Simplify right side
    3,201.78x = 7,971,968.62
  5. Step 5: Solve for x
    x = 7,971,968.62/3,201.78
  6. Step 6: Final answer
    x = 2,489.86

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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.