Home / 1,431.34-2,147.74-1,084.54

Finding the Fourth Proportional to 1,431.34, 2,147.74 and 1,084.54

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Solution

The fourth proportional to 1,431.34, 2,147.74 and 1,084.54 is: 1,627.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.34 : 2,147.74 = 1,084.54 : x
  2. Step 2: Convert to fraction form
    1,431.34/2,147.74 = 1,084.54/x
  3. Step 3: Cross multiply
    1,431.34x = 2,147.74 × 1,084.54
  4. Step 4: Simplify right side
    1,431.34x = 2,329,309.94
  5. Step 5: Solve for x
    x = 2,329,309.94/1,431.34
  6. Step 6: Final answer
    x = 1,627.36

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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.