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Finding the Fourth Proportional to 4,870, 6,720.60 and 2,662

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Solution

The fourth proportional to 4,870, 6,720.60 and 2,662 is: 3,673.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870 : 6,720.60 = 2,662 : x
  2. Step 2: Convert to fraction form
    4,870/6,720.60 = 2,662/x
  3. Step 3: Cross multiply
    4,870x = 6,720.60 × 2,662
  4. Step 4: Simplify right side
    4,870x = 17,890,237.20
  5. Step 5: Solve for x
    x = 17,890,237.20/4,870
  6. Step 6: Final answer
    x = 3,673.56

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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.