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Finding the Fourth Proportional to 2,215.69, 3,323.67 and 917.26

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Solution

The fourth proportional to 2,215.69, 3,323.67 and 917.26 is: 1,375.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.69 : 3,323.67 = 917.26 : x
  2. Step 2: Convert to fraction form
    2,215.69/3,323.67 = 917.26/x
  3. Step 3: Cross multiply
    2,215.69x = 3,323.67 × 917.26
  4. Step 4: Simplify right side
    2,215.69x = 3,048,669.54
  5. Step 5: Solve for x
    x = 3,048,669.54/2,215.69
  6. Step 6: Final answer
    x = 1,375.95

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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.