Home / 3,415.19-5,122.89-1,335.11

Finding the Fourth Proportional to 3,415.19, 5,122.89 and 1,335.11

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Solution

The fourth proportional to 3,415.19, 5,122.89 and 1,335.11 is: 2,002.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.19 : 5,122.89 = 1,335.11 : x
  2. Step 2: Convert to fraction form
    3,415.19/5,122.89 = 1,335.11/x
  3. Step 3: Cross multiply
    3,415.19x = 5,122.89 × 1,335.11
  4. Step 4: Simplify right side
    3,415.19x = 6,839,634.48
  5. Step 5: Solve for x
    x = 6,839,634.48/3,415.19
  6. Step 6: Final answer
    x = 2,002.71

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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.