Home / 5,715.16-7,887.38-3,198.08

Finding the Fourth Proportional to 5,715.16, 7,887.38 and 3,198.08

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Solution

The fourth proportional to 5,715.16, 7,887.38 and 3,198.08 is: 4,413.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.16 : 7,887.38 = 3,198.08 : x
  2. Step 2: Convert to fraction form
    5,715.16/7,887.38 = 3,198.08/x
  3. Step 3: Cross multiply
    5,715.16x = 7,887.38 × 3,198.08
  4. Step 4: Simplify right side
    5,715.16x = 25,224,475.96
  5. Step 5: Solve for x
    x = 25,224,475.96/5,715.16
  6. Step 6: Final answer
    x = 4,413.61

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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.