Home / 2,181.35-3,268.98-1,139.28

Finding the Fourth Proportional to 2,181.35, 3,268.98 and 1,139.28

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Solution

The fourth proportional to 2,181.35, 3,268.98 and 1,139.28 is: 1,707.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.35 : 3,268.98 = 1,139.28 : x
  2. Step 2: Convert to fraction form
    2,181.35/3,268.98 = 1,139.28/x
  3. Step 3: Cross multiply
    2,181.35x = 3,268.98 × 1,139.28
  4. Step 4: Simplify right side
    2,181.35x = 3,724,283.53
  5. Step 5: Solve for x
    x = 3,724,283.53/2,181.35
  6. Step 6: Final answer
    x = 1,707.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.