Home / 1,928.91-2,889.72-1,147.26

Finding the Fourth Proportional to 1,928.91, 2,889.72 and 1,147.26

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Solution

The fourth proportional to 1,928.91, 2,889.72 and 1,147.26 is: 1,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.91 : 2,889.72 = 1,147.26 : x
  2. Step 2: Convert to fraction form
    1,928.91/2,889.72 = 1,147.26/x
  3. Step 3: Cross multiply
    1,928.91x = 2,889.72 × 1,147.26
  4. Step 4: Simplify right side
    1,928.91x = 3,315,260.17
  5. Step 5: Solve for x
    x = 3,315,260.17/1,928.91
  6. Step 6: Final answer
    x = 1,718.72

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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.