Home / 1,431.06-1,974.93-1,081.14

Finding the Fourth Proportional to 1,431.06, 1,974.93 and 1,081.14

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Solution

The fourth proportional to 1,431.06, 1,974.93 and 1,081.14 is: 1,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.06 : 1,974.93 = 1,081.14 : x
  2. Step 2: Convert to fraction form
    1,431.06/1,974.93 = 1,081.14/x
  3. Step 3: Cross multiply
    1,431.06x = 1,974.93 × 1,081.14
  4. Step 4: Simplify right side
    1,431.06x = 2,135,175.82
  5. Step 5: Solve for x
    x = 2,135,175.82/1,431.06
  6. Step 6: Final answer
    x = 1,492.02

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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.