Home / 6,413.68-8,857.20-4,429.36

Finding the Fourth Proportional to 6,413.68, 8,857.20 and 4,429.36

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Solution

The fourth proportional to 6,413.68, 8,857.20 and 4,429.36 is: 6,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,413.68 : 8,857.20 = 4,429.36 : x
  2. Step 2: Convert to fraction form
    6,413.68/8,857.20 = 4,429.36/x
  3. Step 3: Cross multiply
    6,413.68x = 8,857.20 × 4,429.36
  4. Step 4: Simplify right side
    6,413.68x = 39,231,727.39
  5. Step 5: Solve for x
    x = 39,231,727.39/6,413.68
  6. Step 6: Final answer
    x = 6,116.88

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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.