Home / 1,909.28-2,635.44-1,163.72

Finding the Fourth Proportional to 1,909.28, 2,635.44 and 1,163.72

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Solution

The fourth proportional to 1,909.28, 2,635.44 and 1,163.72 is: 1,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.28 : 2,635.44 = 1,163.72 : x
  2. Step 2: Convert to fraction form
    1,909.28/2,635.44 = 1,163.72/x
  3. Step 3: Cross multiply
    1,909.28x = 2,635.44 × 1,163.72
  4. Step 4: Simplify right side
    1,909.28x = 3,066,914.24
  5. Step 5: Solve for x
    x = 3,066,914.24/1,909.28
  6. Step 6: Final answer
    x = 1,606.32

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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.