Home / 5,413.31-8,120.19-1,715.46

Finding the Fourth Proportional to 5,413.31, 8,120.19 and 1,715.46

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Solution

The fourth proportional to 5,413.31, 8,120.19 and 1,715.46 is: 2,573.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.31 : 8,120.19 = 1,715.46 : x
  2. Step 2: Convert to fraction form
    5,413.31/8,120.19 = 1,715.46/x
  3. Step 3: Cross multiply
    5,413.31x = 8,120.19 × 1,715.46
  4. Step 4: Simplify right side
    5,413.31x = 13,929,837.12
  5. Step 5: Solve for x
    x = 13,929,837.12/5,413.31
  6. Step 6: Final answer
    x = 2,573.26

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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.