Home / 8,389.38-11,578.46-5,413.88

Finding the Fourth Proportional to 8,389.38, 11,578.46 and 5,413.88

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Solution

The fourth proportional to 8,389.38, 11,578.46 and 5,413.88 is: 7,471.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.38 : 11,578.46 = 5,413.88 : x
  2. Step 2: Convert to fraction form
    8,389.38/11,578.46 = 5,413.88/x
  3. Step 3: Cross multiply
    8,389.38x = 11,578.46 × 5,413.88
  4. Step 4: Simplify right side
    8,389.38x = 62,684,335.13
  5. Step 5: Solve for x
    x = 62,684,335.13/8,389.38
  6. Step 6: Final answer
    x = 7,471.87

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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.