Home / 1,928.16-2,661.12-1,181.97

Finding the Fourth Proportional to 1,928.16, 2,661.12 and 1,181.97

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Solution

The fourth proportional to 1,928.16, 2,661.12 and 1,181.97 is: 1,631.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.16 : 2,661.12 = 1,181.97 : x
  2. Step 2: Convert to fraction form
    1,928.16/2,661.12 = 1,181.97/x
  3. Step 3: Cross multiply
    1,928.16x = 2,661.12 × 1,181.97
  4. Step 4: Simplify right side
    1,928.16x = 3,145,364.01
  5. Step 5: Solve for x
    x = 3,145,364.01/1,928.16
  6. Step 6: Final answer
    x = 1,631.28

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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.