Home / 5,413.23-8,118.70-1,715.78

Finding the Fourth Proportional to 5,413.23, 8,118.70 and 1,715.78

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Solution

The fourth proportional to 5,413.23, 8,118.70 and 1,715.78 is: 2,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.23 : 8,118.70 = 1,715.78 : x
  2. Step 2: Convert to fraction form
    5,413.23/8,118.70 = 1,715.78/x
  3. Step 3: Cross multiply
    5,413.23x = 8,118.70 × 1,715.78
  4. Step 4: Simplify right side
    5,413.23x = 13,929,919.09
  5. Step 5: Solve for x
    x = 13,929,919.09/5,413.23
  6. Step 6: Final answer
    x = 2,573.31

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1.5x scale

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.