Home / 1,928.11-2,878.21-1,694.57

Finding the Fourth Proportional to 1,928.11, 2,878.21 and 1,694.57

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Solution

The fourth proportional to 1,928.11, 2,878.21 and 1,694.57 is: 2,529.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.11 : 2,878.21 = 1,694.57 : x
  2. Step 2: Convert to fraction form
    1,928.11/2,878.21 = 1,694.57/x
  3. Step 3: Cross multiply
    1,928.11x = 2,878.21 × 1,694.57
  4. Step 4: Simplify right side
    1,928.11x = 4,877,328.32
  5. Step 5: Solve for x
    x = 4,877,328.32/1,928.11
  6. Step 6: Final answer
    x = 2,529.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.