Home / 3,686.93-5,530.21-1,378.25

Finding the Fourth Proportional to 3,686.93, 5,530.21 and 1,378.25

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Solution

The fourth proportional to 3,686.93, 5,530.21 and 1,378.25 is: 2,067.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.93 : 5,530.21 = 1,378.25 : x
  2. Step 2: Convert to fraction form
    3,686.93/5,530.21 = 1,378.25/x
  3. Step 3: Cross multiply
    3,686.93x = 5,530.21 × 1,378.25
  4. Step 4: Simplify right side
    3,686.93x = 7,622,011.93
  5. Step 5: Solve for x
    x = 7,622,011.93/3,686.93
  6. Step 6: Final answer
    x = 2,067.31

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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.