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Finding the Fourth Proportional to 2,583.19, 3,874.78 and 851.81

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Solution

The fourth proportional to 2,583.19, 3,874.78 and 851.81 is: 1,277.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,583.19 : 3,874.78 = 851.81 : x
  2. Step 2: Convert to fraction form
    2,583.19/3,874.78 = 851.81/x
  3. Step 3: Cross multiply
    2,583.19x = 3,874.78 × 851.81
  4. Step 4: Simplify right side
    2,583.19x = 3,300,588.70
  5. Step 5: Solve for x
    x = 3,300,588.70/2,583.19
  6. Step 6: Final answer
    x = 1,277.72

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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.