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Finding the Fourth Proportional to 1,812.27, 2,718.36 and 626.23

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Solution

The fourth proportional to 1,812.27, 2,718.36 and 626.23 is: 939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.27 : 2,718.36 = 626.23 : x
  2. Step 2: Convert to fraction form
    1,812.27/2,718.36 = 626.23/x
  3. Step 3: Cross multiply
    1,812.27x = 2,718.36 × 626.23
  4. Step 4: Simplify right side
    1,812.27x = 1,702,321.98
  5. Step 5: Solve for x
    x = 1,702,321.98/1,812.27
  6. Step 6: Final answer
    x = 939.33

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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.