Home / 2,619.33-3,928.38-1,157.68

Finding the Fourth Proportional to 2,619.33, 3,928.38 and 1,157.68

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Solution

The fourth proportional to 2,619.33, 3,928.38 and 1,157.68 is: 1,736.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.33 : 3,928.38 = 1,157.68 : x
  2. Step 2: Convert to fraction form
    2,619.33/3,928.38 = 1,157.68/x
  3. Step 3: Cross multiply
    2,619.33x = 3,928.38 × 1,157.68
  4. Step 4: Simplify right side
    2,619.33x = 4,547,806.96
  5. Step 5: Solve for x
    x = 4,547,806.96/2,619.33
  6. Step 6: Final answer
    x = 1,736.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.