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Finding the Fourth Proportional to 1,977.76, 2,729.28 and 1,093.55

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Solution

The fourth proportional to 1,977.76, 2,729.28 and 1,093.55 is: 1,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.76 : 2,729.28 = 1,093.55 : x
  2. Step 2: Convert to fraction form
    1,977.76/2,729.28 = 1,093.55/x
  3. Step 3: Cross multiply
    1,977.76x = 2,729.28 × 1,093.55
  4. Step 4: Simplify right side
    1,977.76x = 2,984,604.14
  5. Step 5: Solve for x
    x = 2,984,604.14/1,977.76
  6. Step 6: Final answer
    x = 1,509.08

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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.