Home / 5,715.95-7,887.71-3,198.06

Finding the Fourth Proportional to 5,715.95, 7,887.71 and 3,198.06

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Solution

The fourth proportional to 5,715.95, 7,887.71 and 3,198.06 is: 4,413.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.95 : 7,887.71 = 3,198.06 : x
  2. Step 2: Convert to fraction form
    5,715.95/7,887.71 = 3,198.06/x
  3. Step 3: Cross multiply
    5,715.95x = 7,887.71 × 3,198.06
  4. Step 4: Simplify right side
    5,715.95x = 25,225,377.84
  5. Step 5: Solve for x
    x = 25,225,377.84/5,715.95
  6. Step 6: Final answer
    x = 4,413.16

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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.