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Finding the Fourth Proportional to 3,608.76, 4,980 and 2,036.84

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Solution

The fourth proportional to 3,608.76, 4,980 and 2,036.84 is: 2,810.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.76 : 4,980 = 2,036.84 : x
  2. Step 2: Convert to fraction form
    3,608.76/4,980 = 2,036.84/x
  3. Step 3: Cross multiply
    3,608.76x = 4,980 × 2,036.84
  4. Step 4: Simplify right side
    3,608.76x = 10,143,463.20
  5. Step 5: Solve for x
    x = 10,143,463.20/3,608.76
  6. Step 6: Final answer
    x = 2,810.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.