Home / 2,419.20-3,339-1,536.12

Finding the Fourth Proportional to 2,419.20, 3,339 and 1,536.12

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Solution

The fourth proportional to 2,419.20, 3,339 and 1,536.12 is: 2,120.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.20 : 3,339 = 1,536.12 : x
  2. Step 2: Convert to fraction form
    2,419.20/3,339 = 1,536.12/x
  3. Step 3: Cross multiply
    2,419.20x = 3,339 × 1,536.12
  4. Step 4: Simplify right side
    2,419.20x = 5,129,104.68
  5. Step 5: Solve for x
    x = 5,129,104.68/2,419.20
  6. Step 6: Final answer
    x = 2,120.17

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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.