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Finding the Fourth Proportional to 4,928, 6,801.60 and 2,938.88

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Solution

The fourth proportional to 4,928, 6,801.60 and 2,938.88 is: 4,056.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928 : 6,801.60 = 2,938.88 : x
  2. Step 2: Convert to fraction form
    4,928/6,801.60 = 2,938.88/x
  3. Step 3: Cross multiply
    4,928x = 6,801.60 × 2,938.88
  4. Step 4: Simplify right side
    4,928x = 19,989,086.21
  5. Step 5: Solve for x
    x = 19,989,086.21/4,928
  6. Step 6: Final answer
    x = 4,056.23

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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.