Home / 1,928.62-2,661.44-1,077.85

Finding the Fourth Proportional to 1,928.62, 2,661.44 and 1,077.85

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Solution

The fourth proportional to 1,928.62, 2,661.44 and 1,077.85 is: 1,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.62 : 2,661.44 = 1,077.85 : x
  2. Step 2: Convert to fraction form
    1,928.62/2,661.44 = 1,077.85/x
  3. Step 3: Cross multiply
    1,928.62x = 2,661.44 × 1,077.85
  4. Step 4: Simplify right side
    1,928.62x = 2,868,633.10
  5. Step 5: Solve for x
    x = 2,868,633.10/1,928.62
  6. Step 6: Final answer
    x = 1,487.40

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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.