Home / 1,609.44-2,221.80-1,138.32

Finding the Fourth Proportional to 1,609.44, 2,221.80 and 1,138.32

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Solution

The fourth proportional to 1,609.44, 2,221.80 and 1,138.32 is: 1,571.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.44 : 2,221.80 = 1,138.32 : x
  2. Step 2: Convert to fraction form
    1,609.44/2,221.80 = 1,138.32/x
  3. Step 3: Cross multiply
    1,609.44x = 2,221.80 × 1,138.32
  4. Step 4: Simplify right side
    1,609.44x = 2,529,119.38
  5. Step 5: Solve for x
    x = 2,529,119.38/1,609.44
  6. Step 6: Final answer
    x = 1,571.43

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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.