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Finding the Fourth Proportional to 1,855.64, 2,794.39 and 1,339.28

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Solution

The fourth proportional to 1,855.64, 2,794.39 and 1,339.28 is: 2,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.64 : 2,794.39 = 1,339.28 : x
  2. Step 2: Convert to fraction form
    1,855.64/2,794.39 = 1,339.28/x
  3. Step 3: Cross multiply
    1,855.64x = 2,794.39 × 1,339.28
  4. Step 4: Simplify right side
    1,855.64x = 3,742,453.32
  5. Step 5: Solve for x
    x = 3,742,453.32/1,855.64
  6. Step 6: Final answer
    x = 2,016.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.