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Finding the Fourth Proportional to 4,980.05, 7,469.05 and 1,859.48

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Solution

The fourth proportional to 4,980.05, 7,469.05 and 1,859.48 is: 2,788.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.05 : 7,469.05 = 1,859.48 : x
  2. Step 2: Convert to fraction form
    4,980.05/7,469.05 = 1,859.48/x
  3. Step 3: Cross multiply
    4,980.05x = 7,469.05 × 1,859.48
  4. Step 4: Simplify right side
    4,980.05x = 13,888,507.10
  5. Step 5: Solve for x
    x = 13,888,507.10/4,980.05
  6. Step 6: Final answer
    x = 2,788.83

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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.