Home / 1,977.83-2,729.39-1,181.51

Finding the Fourth Proportional to 1,977.83, 2,729.39 and 1,181.51

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Solution

The fourth proportional to 1,977.83, 2,729.39 and 1,181.51 is: 1,630.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.83 : 2,729.39 = 1,181.51 : x
  2. Step 2: Convert to fraction form
    1,977.83/2,729.39 = 1,181.51/x
  3. Step 3: Cross multiply
    1,977.83x = 2,729.39 × 1,181.51
  4. Step 4: Simplify right side
    1,977.83x = 3,224,803.26
  5. Step 5: Solve for x
    x = 3,224,803.26/1,977.83
  6. Step 6: Final answer
    x = 1,630.48

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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.