Home / 3,428.22-5,138.64-1,236.30

Finding the Fourth Proportional to 3,428.22, 5,138.64 and 1,236.30

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Solution

The fourth proportional to 3,428.22, 5,138.64 and 1,236.30 is: 1,853.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.22 : 5,138.64 = 1,236.30 : x
  2. Step 2: Convert to fraction form
    3,428.22/5,138.64 = 1,236.30/x
  3. Step 3: Cross multiply
    3,428.22x = 5,138.64 × 1,236.30
  4. Step 4: Simplify right side
    3,428.22x = 6,352,900.63
  5. Step 5: Solve for x
    x = 6,352,900.63/3,428.22
  6. Step 6: Final answer
    x = 1,853.12

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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.