Home / 3,415.57-5,115.15-1,950.28

Finding the Fourth Proportional to 3,415.57, 5,115.15 and 1,950.28

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Solution

The fourth proportional to 3,415.57, 5,115.15 and 1,950.28 is: 2,920.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.57 : 5,115.15 = 1,950.28 : x
  2. Step 2: Convert to fraction form
    3,415.57/5,115.15 = 1,950.28/x
  3. Step 3: Cross multiply
    3,415.57x = 5,115.15 × 1,950.28
  4. Step 4: Simplify right side
    3,415.57x = 9,975,961.95
  5. Step 5: Solve for x
    x = 9,975,961.95/3,415.57
  6. Step 6: Final answer
    x = 2,920.73

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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.