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Finding the Fourth Proportional to 3,608.78, 4,980.03 and 2,036.87

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Solution

The fourth proportional to 3,608.78, 4,980.03 and 2,036.87 is: 2,810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.78 : 4,980.03 = 2,036.87 : x
  2. Step 2: Convert to fraction form
    3,608.78/4,980.03 = 2,036.87/x
  3. Step 3: Cross multiply
    3,608.78x = 4,980.03 × 2,036.87
  4. Step 4: Simplify right side
    3,608.78x = 10,143,641.17
  5. Step 5: Solve for x
    x = 10,143,641.17/3,608.78
  6. Step 6: Final answer
    x = 2,810.82

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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.