Home / 6,172.68-8,518.32-3,378.12

Finding the Fourth Proportional to 6,172.68, 8,518.32 and 3,378.12

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Solution

The fourth proportional to 6,172.68, 8,518.32 and 3,378.12 is: 4,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,172.68 : 8,518.32 = 3,378.12 : x
  2. Step 2: Convert to fraction form
    6,172.68/8,518.32 = 3,378.12/x
  3. Step 3: Cross multiply
    6,172.68x = 8,518.32 × 3,378.12
  4. Step 4: Simplify right side
    6,172.68x = 28,775,907.16
  5. Step 5: Solve for x
    x = 28,775,907.16/6,172.68
  6. Step 6: Final answer
    x = 4,661.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.