Home / 1,084.36-1,634.59-1,021.72

Finding the Fourth Proportional to 1,084.36, 1,634.59 and 1,021.72

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Solution

The fourth proportional to 1,084.36, 1,634.59 and 1,021.72 is: 1,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.36 : 1,634.59 = 1,021.72 : x
  2. Step 2: Convert to fraction form
    1,084.36/1,634.59 = 1,021.72/x
  3. Step 3: Cross multiply
    1,084.36x = 1,634.59 × 1,021.72
  4. Step 4: Simplify right side
    1,084.36x = 1,670,093.29
  5. Step 5: Solve for x
    x = 1,670,093.29/1,084.36
  6. Step 6: Final answer
    x = 1,540.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.