Home / 2,612.26-3,918.38-858.49

Finding the Fourth Proportional to 2,612.26, 3,918.38 and 858.49

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Solution

The fourth proportional to 2,612.26, 3,918.38 and 858.49 is: 1,287.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.26 : 3,918.38 = 858.49 : x
  2. Step 2: Convert to fraction form
    2,612.26/3,918.38 = 858.49/x
  3. Step 3: Cross multiply
    2,612.26x = 3,918.38 × 858.49
  4. Step 4: Simplify right side
    2,612.26x = 3,363,890.05
  5. Step 5: Solve for x
    x = 3,363,890.05/2,612.26
  6. Step 6: Final answer
    x = 1,287.73

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1.5x scale

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.