Home / 7,129.10-10,693.65-2,198.30

Finding the Fourth Proportional to 7,129.10, 10,693.65 and 2,198.30

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Solution

The fourth proportional to 7,129.10, 10,693.65 and 2,198.30 is: 3,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.10 : 10,693.65 = 2,198.30 : x
  2. Step 2: Convert to fraction form
    7,129.10/10,693.65 = 2,198.30/x
  3. Step 3: Cross multiply
    7,129.10x = 10,693.65 × 2,198.30
  4. Step 4: Simplify right side
    7,129.10x = 23,507,850.80
  5. Step 5: Solve for x
    x = 23,507,850.80/7,129.10
  6. Step 6: Final answer
    x = 3,297.45

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1.5x scale

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.