Home / 7,170.22-10,755.30-1,905.76

Finding the Fourth Proportional to 7,170.22, 10,755.30 and 1,905.76

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Solution

The fourth proportional to 7,170.22, 10,755.30 and 1,905.76 is: 2,858.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.22 : 10,755.30 = 1,905.76 : x
  2. Step 2: Convert to fraction form
    7,170.22/10,755.30 = 1,905.76/x
  3. Step 3: Cross multiply
    7,170.22x = 10,755.30 × 1,905.76
  4. Step 4: Simplify right side
    7,170.22x = 20,497,008.70
  5. Step 5: Solve for x
    x = 20,497,008.70/7,170.22
  6. Step 6: Final answer
    x = 2,858.63

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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.