Home / 3,570.38-5,357.10-1,380.66

Finding the Fourth Proportional to 3,570.38, 5,357.10 and 1,380.66

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Solution

The fourth proportional to 3,570.38, 5,357.10 and 1,380.66 is: 2,071.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.38 : 5,357.10 = 1,380.66 : x
  2. Step 2: Convert to fraction form
    3,570.38/5,357.10 = 1,380.66/x
  3. Step 3: Cross multiply
    3,570.38x = 5,357.10 × 1,380.66
  4. Step 4: Simplify right side
    3,570.38x = 7,396,333.69
  5. Step 5: Solve for x
    x = 7,396,333.69/3,570.38
  6. Step 6: Final answer
    x = 2,071.58

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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.