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Finding the Fourth Proportional to 4,980.75, 7,471.26 and 1,518

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Solution

The fourth proportional to 4,980.75, 7,471.26 and 1,518 is: 2,277.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.75 : 7,471.26 = 1,518 : x
  2. Step 2: Convert to fraction form
    4,980.75/7,471.26 = 1,518/x
  3. Step 3: Cross multiply
    4,980.75x = 7,471.26 × 1,518
  4. Step 4: Simplify right side
    4,980.75x = 11,341,372.68
  5. Step 5: Solve for x
    x = 11,341,372.68/4,980.75
  6. Step 6: Final answer
    x = 2,277.04

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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.