Home / 3,286.60-4,930.56-1,900.60

Finding the Fourth Proportional to 3,286.60, 4,930.56 and 1,900.60

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Solution

The fourth proportional to 3,286.60, 4,930.56 and 1,900.60 is: 2,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.60 : 4,930.56 = 1,900.60 : x
  2. Step 2: Convert to fraction form
    3,286.60/4,930.56 = 1,900.60/x
  3. Step 3: Cross multiply
    3,286.60x = 4,930.56 × 1,900.60
  4. Step 4: Simplify right side
    3,286.60x = 9,371,022.34
  5. Step 5: Solve for x
    x = 9,371,022.34/3,286.60
  6. Step 6: Final answer
    x = 2,851.28

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1.5x scale

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.