Home / 7,830.24-10,806.22-5,172.99

Finding the Fourth Proportional to 7,830.24, 10,806.22 and 5,172.99

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Solution

The fourth proportional to 7,830.24, 10,806.22 and 5,172.99 is: 7,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.24 : 10,806.22 = 5,172.99 : x
  2. Step 2: Convert to fraction form
    7,830.24/10,806.22 = 5,172.99/x
  3. Step 3: Cross multiply
    7,830.24x = 10,806.22 × 5,172.99
  4. Step 4: Simplify right side
    7,830.24x = 55,900,413.97
  5. Step 5: Solve for x
    x = 55,900,413.97/7,830.24
  6. Step 6: Final answer
    x = 7,139.05

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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.