Home / 1,036.26-1,428.66-858.57

Finding the Fourth Proportional to 1,036.26, 1,428.66 and 858.57

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Solution

The fourth proportional to 1,036.26, 1,428.66 and 858.57 is: 1,183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.26 : 1,428.66 = 858.57 : x
  2. Step 2: Convert to fraction form
    1,036.26/1,428.66 = 858.57/x
  3. Step 3: Cross multiply
    1,036.26x = 1,428.66 × 858.57
  4. Step 4: Simplify right side
    1,036.26x = 1,226,604.62
  5. Step 5: Solve for x
    x = 1,226,604.62/1,036.26
  6. Step 6: Final answer
    x = 1,183.68

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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.