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Finding the Fourth Proportional to 2,084.68, 3,126.93 and 851.68

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Solution

The fourth proportional to 2,084.68, 3,126.93 and 851.68 is: 1,277.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.68 : 3,126.93 = 851.68 : x
  2. Step 2: Convert to fraction form
    2,084.68/3,126.93 = 851.68/x
  3. Step 3: Cross multiply
    2,084.68x = 3,126.93 × 851.68
  4. Step 4: Simplify right side
    2,084.68x = 2,663,143.74
  5. Step 5: Solve for x
    x = 2,663,143.74/2,084.68
  6. Step 6: Final answer
    x = 1,277.48

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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.