Home / 7,739.10-11,620.80-4,458.60

Finding the Fourth Proportional to 7,739.10, 11,620.80 and 4,458.60

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Solution

The fourth proportional to 7,739.10, 11,620.80 and 4,458.60 is: 6,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.10 : 11,620.80 = 4,458.60 : x
  2. Step 2: Convert to fraction form
    7,739.10/11,620.80 = 4,458.60/x
  3. Step 3: Cross multiply
    7,739.10x = 11,620.80 × 4,458.60
  4. Step 4: Simplify right side
    7,739.10x = 51,812,498.88
  5. Step 5: Solve for x
    x = 51,812,498.88/7,739.10
  6. Step 6: Final answer
    x = 6,694.90

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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.