Home / 1,977.95-2,729.25-1,181.54

Finding the Fourth Proportional to 1,977.95, 2,729.25 and 1,181.54

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Solution

The fourth proportional to 1,977.95, 2,729.25 and 1,181.54 is: 1,630.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.95 : 2,729.25 = 1,181.54 : x
  2. Step 2: Convert to fraction form
    1,977.95/2,729.25 = 1,181.54/x
  3. Step 3: Cross multiply
    1,977.95x = 2,729.25 × 1,181.54
  4. Step 4: Simplify right side
    1,977.95x = 3,224,704.40
  5. Step 5: Solve for x
    x = 3,224,704.40/1,977.95
  6. Step 6: Final answer
    x = 1,630.33

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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.