Home / 5,620.10-7,755.70-3,102.21

Finding the Fourth Proportional to 5,620.10, 7,755.70 and 3,102.21

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Solution

The fourth proportional to 5,620.10, 7,755.70 and 3,102.21 is: 4,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.10 : 7,755.70 = 3,102.21 : x
  2. Step 2: Convert to fraction form
    5,620.10/7,755.70 = 3,102.21/x
  3. Step 3: Cross multiply
    5,620.10x = 7,755.70 × 3,102.21
  4. Step 4: Simplify right side
    5,620.10x = 24,059,805.98
  5. Step 5: Solve for x
    x = 24,059,805.98/5,620.10
  6. Step 6: Final answer
    x = 4,281.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.