Home / 7,141.28-10,705.74-2,761.80

Finding the Fourth Proportional to 7,141.28, 10,705.74 and 2,761.80

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Solution

The fourth proportional to 7,141.28, 10,705.74 and 2,761.80 is: 4,140.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.28 : 10,705.74 = 2,761.80 : x
  2. Step 2: Convert to fraction form
    7,141.28/10,705.74 = 2,761.80/x
  3. Step 3: Cross multiply
    7,141.28x = 10,705.74 × 2,761.80
  4. Step 4: Simplify right side
    7,141.28x = 29,567,112.73
  5. Step 5: Solve for x
    x = 29,567,112.73/7,141.28
  6. Step 6: Final answer
    x = 4,140.31

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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.