Home / 6,620.34-9,930.60-1,690.02

Finding the Fourth Proportional to 6,620.34, 9,930.60 and 1,690.02

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Solution

The fourth proportional to 6,620.34, 9,930.60 and 1,690.02 is: 2,535.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.34 : 9,930.60 = 1,690.02 : x
  2. Step 2: Convert to fraction form
    6,620.34/9,930.60 = 1,690.02/x
  3. Step 3: Cross multiply
    6,620.34x = 9,930.60 × 1,690.02
  4. Step 4: Simplify right side
    6,620.34x = 16,782,912.61
  5. Step 5: Solve for x
    x = 16,782,912.61/6,620.34
  6. Step 6: Final answer
    x = 2,535.05

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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.