Home / 3,122.20-4,308.64-1,705.90

Finding the Fourth Proportional to 3,122.20, 4,308.64 and 1,705.90

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Solution

The fourth proportional to 3,122.20, 4,308.64 and 1,705.90 is: 2,354.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.20 : 4,308.64 = 1,705.90 : x
  2. Step 2: Convert to fraction form
    3,122.20/4,308.64 = 1,705.90/x
  3. Step 3: Cross multiply
    3,122.20x = 4,308.64 × 1,705.90
  4. Step 4: Simplify right side
    3,122.20x = 7,350,108.98
  5. Step 5: Solve for x
    x = 7,350,108.98/3,122.20
  6. Step 6: Final answer
    x = 2,354.14

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