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Finding the Fourth Proportional to 4,970.60, 7,458.60 and 2,049.20

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Solution

The fourth proportional to 4,970.60, 7,458.60 and 2,049.20 is: 3,074.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,970.60 : 7,458.60 = 2,049.20 : x
  2. Step 2: Convert to fraction form
    4,970.60/7,458.60 = 2,049.20/x
  3. Step 3: Cross multiply
    4,970.60x = 7,458.60 × 2,049.20
  4. Step 4: Simplify right side
    4,970.60x = 15,284,163.12
  5. Step 5: Solve for x
    x = 15,284,163.12/4,970.60
  6. Step 6: Final answer
    x = 3,074.91

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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.