Home / 1,181.21-1,629.81-1,004.87

Finding the Fourth Proportional to 1,181.21, 1,629.81 and 1,004.87

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Solution

The fourth proportional to 1,181.21, 1,629.81 and 1,004.87 is: 1,386.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.21 : 1,629.81 = 1,004.87 : x
  2. Step 2: Convert to fraction form
    1,181.21/1,629.81 = 1,004.87/x
  3. Step 3: Cross multiply
    1,181.21x = 1,629.81 × 1,004.87
  4. Step 4: Simplify right side
    1,181.21x = 1,637,751.25
  5. Step 5: Solve for x
    x = 1,637,751.25/1,181.21
  6. Step 6: Final answer
    x = 1,386.51

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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.