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Finding the Fourth Proportional to 1,805.93, 2,702.76 and 1,328.33

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Solution

The fourth proportional to 1,805.93, 2,702.76 and 1,328.33 is: 1,987.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.93 : 2,702.76 = 1,328.33 : x
  2. Step 2: Convert to fraction form
    1,805.93/2,702.76 = 1,328.33/x
  3. Step 3: Cross multiply
    1,805.93x = 2,702.76 × 1,328.33
  4. Step 4: Simplify right side
    1,805.93x = 3,590,157.19
  5. Step 5: Solve for x
    x = 3,590,157.19/1,805.93
  6. Step 6: Final answer
    x = 1,987.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.