Home / 1,971.66-2,720.84-1,087.54

Finding the Fourth Proportional to 1,971.66, 2,720.84 and 1,087.54

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Solution

The fourth proportional to 1,971.66, 2,720.84 and 1,087.54 is: 1,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.66 : 2,720.84 = 1,087.54 : x
  2. Step 2: Convert to fraction form
    1,971.66/2,720.84 = 1,087.54/x
  3. Step 3: Cross multiply
    1,971.66x = 2,720.84 × 1,087.54
  4. Step 4: Simplify right side
    1,971.66x = 2,959,022.33
  5. Step 5: Solve for x
    x = 2,959,022.33/1,971.66
  6. Step 6: Final answer
    x = 1,500.78

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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.