Home / 5,413.47-8,121.21-1,715.95

Finding the Fourth Proportional to 5,413.47, 8,121.21 and 1,715.95

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Solution

The fourth proportional to 5,413.47, 8,121.21 and 1,715.95 is: 2,574.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.47 : 8,121.21 = 1,715.95 : x
  2. Step 2: Convert to fraction form
    5,413.47/8,121.21 = 1,715.95/x
  3. Step 3: Cross multiply
    5,413.47x = 8,121.21 × 1,715.95
  4. Step 4: Simplify right side
    5,413.47x = 13,935,590.30
  5. Step 5: Solve for x
    x = 13,935,590.30/5,413.47
  6. Step 6: Final answer
    x = 2,574.24

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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.