Home / 7,129.12-10,693.96-2,198.32

Finding the Fourth Proportional to 7,129.12, 10,693.96 and 2,198.32

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Solution

The fourth proportional to 7,129.12, 10,693.96 and 2,198.32 is: 3,297.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.12 : 10,693.96 = 2,198.32 : x
  2. Step 2: Convert to fraction form
    7,129.12/10,693.96 = 2,198.32/x
  3. Step 3: Cross multiply
    7,129.12x = 10,693.96 × 2,198.32
  4. Step 4: Simplify right side
    7,129.12x = 23,508,746.15
  5. Step 5: Solve for x
    x = 23,508,746.15/7,129.12
  6. Step 6: Final answer
    x = 3,297.57

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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.