Home / 1,518.56-2,097.60-1,121.03

Finding the Fourth Proportional to 1,518.56, 2,097.60 and 1,121.03

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Solution

The fourth proportional to 1,518.56, 2,097.60 and 1,121.03 is: 1,548.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.56 : 2,097.60 = 1,121.03 : x
  2. Step 2: Convert to fraction form
    1,518.56/2,097.60 = 1,121.03/x
  3. Step 3: Cross multiply
    1,518.56x = 2,097.60 × 1,121.03
  4. Step 4: Simplify right side
    1,518.56x = 2,351,471.60
  5. Step 5: Solve for x
    x = 2,351,471.60/1,518.56
  6. Step 6: Final answer
    x = 1,548.48

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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.