Home / 1,860.68-2,568.26-1,115.12

Finding the Fourth Proportional to 1,860.68, 2,568.26 and 1,115.12

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Solution

The fourth proportional to 1,860.68, 2,568.26 and 1,115.12 is: 1,539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.68 : 2,568.26 = 1,115.12 : x
  2. Step 2: Convert to fraction form
    1,860.68/2,568.26 = 1,115.12/x
  3. Step 3: Cross multiply
    1,860.68x = 2,568.26 × 1,115.12
  4. Step 4: Simplify right side
    1,860.68x = 2,863,918.09
  5. Step 5: Solve for x
    x = 2,863,918.09/1,860.68
  6. Step 6: Final answer
    x = 1,539.18

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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.