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Finding the Fourth Proportional to 1,984.46, 2,976.72 and 1,368

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Solution

The fourth proportional to 1,984.46, 2,976.72 and 1,368 is: 2,052.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.46 : 2,976.72 = 1,368 : x
  2. Step 2: Convert to fraction form
    1,984.46/2,976.72 = 1,368/x
  3. Step 3: Cross multiply
    1,984.46x = 2,976.72 × 1,368
  4. Step 4: Simplify right side
    1,984.46x = 4,072,147.83
  5. Step 5: Solve for x
    x = 4,072,147.83/1,984.46
  6. Step 6: Final answer
    x = 2,052.02

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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.