Home / 6,618.50-9,930.31-2,918.12

Finding the Fourth Proportional to 6,618.50, 9,930.31 and 2,918.12

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Solution

The fourth proportional to 6,618.50, 9,930.31 and 2,918.12 is: 4,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.50 : 9,930.31 = 2,918.12 : x
  2. Step 2: Convert to fraction form
    6,618.50/9,930.31 = 2,918.12/x
  3. Step 3: Cross multiply
    6,618.50x = 9,930.31 × 2,918.12
  4. Step 4: Simplify right side
    6,618.50x = 28,977,786.57
  5. Step 5: Solve for x
    x = 28,977,786.57/6,618.50
  6. Step 6: Final answer
    x = 4,378.30

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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.