Home / 2,107.68-2,908.60-1,163.45

Finding the Fourth Proportional to 2,107.68, 2,908.60 and 1,163.45

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Solution

The fourth proportional to 2,107.68, 2,908.60 and 1,163.45 is: 1,605.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.68 : 2,908.60 = 1,163.45 : x
  2. Step 2: Convert to fraction form
    2,107.68/2,908.60 = 1,163.45/x
  3. Step 3: Cross multiply
    2,107.68x = 2,908.60 × 1,163.45
  4. Step 4: Simplify right side
    2,107.68x = 3,384,016.12
  5. Step 5: Solve for x
    x = 3,384,016.12/2,107.68
  6. Step 6: Final answer
    x = 1,605.57

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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.