Home / 3,419.05-5,128.58-1,110.55

Finding the Fourth Proportional to 3,419.05, 5,128.58 and 1,110.55

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Solution

The fourth proportional to 3,419.05, 5,128.58 and 1,110.55 is: 1,665.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.05 : 5,128.58 = 1,110.55 : x
  2. Step 2: Convert to fraction form
    3,419.05/5,128.58 = 1,110.55/x
  3. Step 3: Cross multiply
    3,419.05x = 5,128.58 × 1,110.55
  4. Step 4: Simplify right side
    3,419.05x = 5,695,538.97
  5. Step 5: Solve for x
    x = 5,695,538.97/3,419.05
  6. Step 6: Final answer
    x = 1,665.83

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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.