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Finding the Fourth Proportional to 4,918.02, 7,378.11 and 1,455.54

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Solution

The fourth proportional to 4,918.02, 7,378.11 and 1,455.54 is: 2,183.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.02 : 7,378.11 = 1,455.54 : x
  2. Step 2: Convert to fraction form
    4,918.02/7,378.11 = 1,455.54/x
  3. Step 3: Cross multiply
    4,918.02x = 7,378.11 × 1,455.54
  4. Step 4: Simplify right side
    4,918.02x = 10,739,134.23
  5. Step 5: Solve for x
    x = 10,739,134.23/4,918.02
  6. Step 6: Final answer
    x = 2,183.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.