Home / 3,469.40-4,788.19-1,977.63

Finding the Fourth Proportional to 3,469.40, 4,788.19 and 1,977.63

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Solution

The fourth proportional to 3,469.40, 4,788.19 and 1,977.63 is: 2,729.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.40 : 4,788.19 = 1,977.63 : x
  2. Step 2: Convert to fraction form
    3,469.40/4,788.19 = 1,977.63/x
  3. Step 3: Cross multiply
    3,469.40x = 4,788.19 × 1,977.63
  4. Step 4: Simplify right side
    3,469.40x = 9,469,268.19
  5. Step 5: Solve for x
    x = 9,469,268.19/3,469.40
  6. Step 6: Final answer
    x = 2,729.37

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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.