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Finding the Fourth Proportional to 4,505, 6,216.78 and 2,515.50

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Solution

The fourth proportional to 4,505, 6,216.78 and 2,515.50 is: 3,471.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,505 : 6,216.78 = 2,515.50 : x
  2. Step 2: Convert to fraction form
    4,505/6,216.78 = 2,515.50/x
  3. Step 3: Cross multiply
    4,505x = 6,216.78 × 2,515.50
  4. Step 4: Simplify right side
    4,505x = 15,638,310.09
  5. Step 5: Solve for x
    x = 15,638,310.09/4,505
  6. Step 6: Final answer
    x = 3,471.32

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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.