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Finding the Fourth Proportional to 4,908.63, 6,774.89 and 2,918.79

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Solution

The fourth proportional to 4,908.63, 6,774.89 and 2,918.79 is: 4,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.63 : 6,774.89 = 2,918.79 : x
  2. Step 2: Convert to fraction form
    4,908.63/6,774.89 = 2,918.79/x
  3. Step 3: Cross multiply
    4,908.63x = 6,774.89 × 2,918.79
  4. Step 4: Simplify right side
    4,908.63x = 19,774,466.59
  5. Step 5: Solve for x
    x = 19,774,466.59/4,908.63
  6. Step 6: Final answer
    x = 4,028.51

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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.