Home / 1,539.22-2,121.60-1,119.64

Finding the Fourth Proportional to 1,539.22, 2,121.60 and 1,119.64

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Solution

The fourth proportional to 1,539.22, 2,121.60 and 1,119.64 is: 1,543.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.22 : 2,121.60 = 1,119.64 : x
  2. Step 2: Convert to fraction form
    1,539.22/2,121.60 = 1,119.64/x
  3. Step 3: Cross multiply
    1,539.22x = 2,121.60 × 1,119.64
  4. Step 4: Simplify right side
    1,539.22x = 2,375,428.22
  5. Step 5: Solve for x
    x = 2,375,428.22/1,539.22
  6. Step 6: Final answer
    x = 1,543.27

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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.