Home / 7,171.40-10,755.84-1,976.12

Finding the Fourth Proportional to 7,171.40, 10,755.84 and 1,976.12

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Solution

The fourth proportional to 7,171.40, 10,755.84 and 1,976.12 is: 2,963.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.40 : 10,755.84 = 1,976.12 : x
  2. Step 2: Convert to fraction form
    7,171.40/10,755.84 = 1,976.12/x
  3. Step 3: Cross multiply
    7,171.40x = 10,755.84 × 1,976.12
  4. Step 4: Simplify right side
    7,171.40x = 21,254,830.54
  5. Step 5: Solve for x
    x = 21,254,830.54/7,171.40
  6. Step 6: Final answer
    x = 2,963.83

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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.