Home / 3,551.47-5,320.39-1,986.73

Finding the Fourth Proportional to 3,551.47, 5,320.39 and 1,986.73

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Solution

The fourth proportional to 3,551.47, 5,320.39 and 1,986.73 is: 2,976.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.47 : 5,320.39 = 1,986.73 : x
  2. Step 2: Convert to fraction form
    3,551.47/5,320.39 = 1,986.73/x
  3. Step 3: Cross multiply
    3,551.47x = 5,320.39 × 1,986.73
  4. Step 4: Simplify right side
    3,551.47x = 10,570,175.83
  5. Step 5: Solve for x
    x = 10,570,175.83/3,551.47
  6. Step 6: Final answer
    x = 2,976.28

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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.