Home / 3,017.20-4,163.79-1,690.90

Finding the Fourth Proportional to 3,017.20, 4,163.79 and 1,690.90

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Solution

The fourth proportional to 3,017.20, 4,163.79 and 1,690.90 is: 2,333.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,017.20 : 4,163.79 = 1,690.90 : x
  2. Step 2: Convert to fraction form
    3,017.20/4,163.79 = 1,690.90/x
  3. Step 3: Cross multiply
    3,017.20x = 4,163.79 × 1,690.90
  4. Step 4: Simplify right side
    3,017.20x = 7,040,552.51
  5. Step 5: Solve for x
    x = 7,040,552.51/3,017.20
  6. Step 6: Final answer
    x = 2,333.47

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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.