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Finding the Fourth Proportional to 2,999.60, 4,500.48 and 2,140.64

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Solution

The fourth proportional to 2,999.60, 4,500.48 and 2,140.64 is: 3,211.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.60 : 4,500.48 = 2,140.64 : x
  2. Step 2: Convert to fraction form
    2,999.60/4,500.48 = 2,140.64/x
  3. Step 3: Cross multiply
    2,999.60x = 4,500.48 × 2,140.64
  4. Step 4: Simplify right side
    2,999.60x = 9,633,907.51
  5. Step 5: Solve for x
    x = 9,633,907.51/2,999.60
  6. Step 6: Final answer
    x = 3,211.73

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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.