Home / 3,924.81-5,413.91-3,399.93

Finding the Fourth Proportional to 3,924.81, 5,413.91 and 3,399.93

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Solution

The fourth proportional to 3,924.81, 5,413.91 and 3,399.93 is: 4,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.81 : 5,413.91 = 3,399.93 : x
  2. Step 2: Convert to fraction form
    3,924.81/5,413.91 = 3,399.93/x
  3. Step 3: Cross multiply
    3,924.81x = 5,413.91 × 3,399.93
  4. Step 4: Simplify right side
    3,924.81x = 18,406,898.03
  5. Step 5: Solve for x
    x = 18,406,898.03/3,924.81
  6. Step 6: Final answer
    x = 4,689.88

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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.