Home / 1,889.92-2,607.42-1,181.28

Finding the Fourth Proportional to 1,889.92, 2,607.42 and 1,181.28

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Solution

The fourth proportional to 1,889.92, 2,607.42 and 1,181.28 is: 1,629.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.92 : 2,607.42 = 1,181.28 : x
  2. Step 2: Convert to fraction form
    1,889.92/2,607.42 = 1,181.28/x
  3. Step 3: Cross multiply
    1,889.92x = 2,607.42 × 1,181.28
  4. Step 4: Simplify right side
    1,889.92x = 3,080,093.10
  5. Step 5: Solve for x
    x = 3,080,093.10/1,889.92
  6. Step 6: Final answer
    x = 1,629.75

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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.