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Finding the Fourth Proportional to 2,764, 4,146.48 and 1,396

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Solution

The fourth proportional to 2,764, 4,146.48 and 1,396 is: 2,094.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764 : 4,146.48 = 1,396 : x
  2. Step 2: Convert to fraction form
    2,764/4,146.48 = 1,396/x
  3. Step 3: Cross multiply
    2,764x = 4,146.48 × 1,396
  4. Step 4: Simplify right side
    2,764x = 5,788,486.08
  5. Step 5: Solve for x
    x = 5,788,486.08/2,764
  6. Step 6: Final answer
    x = 2,094.24

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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.