Home / 3,618.78-4,996.16-2,777.87

Finding the Fourth Proportional to 3,618.78, 4,996.16 and 2,777.87

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Solution

The fourth proportional to 3,618.78, 4,996.16 and 2,777.87 is: 3,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.78 : 4,996.16 = 2,777.87 : x
  2. Step 2: Convert to fraction form
    3,618.78/4,996.16 = 2,777.87/x
  3. Step 3: Cross multiply
    3,618.78x = 4,996.16 × 2,777.87
  4. Step 4: Simplify right side
    3,618.78x = 13,878,669.09
  5. Step 5: Solve for x
    x = 13,878,669.09/3,618.78
  6. Step 6: Final answer
    x = 3,835.18

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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.