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Finding the Fourth Proportional to 1,978.03, 2,729.64 and 1,093.75

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Solution

The fourth proportional to 1,978.03, 2,729.64 and 1,093.75 is: 1,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978.03 : 2,729.64 = 1,093.75 : x
  2. Step 2: Convert to fraction form
    1,978.03/2,729.64 = 1,093.75/x
  3. Step 3: Cross multiply
    1,978.03x = 2,729.64 × 1,093.75
  4. Step 4: Simplify right side
    1,978.03x = 2,985,543.75
  5. Step 5: Solve for x
    x = 2,985,543.75/1,978.03
  6. Step 6: Final answer
    x = 1,509.35

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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.