Home / 7,990.39-11,975.16-4,288.29

Finding the Fourth Proportional to 7,990.39, 11,975.16 and 4,288.29

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Solution

The fourth proportional to 7,990.39, 11,975.16 and 4,288.29 is: 6,426.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.39 : 11,975.16 = 4,288.29 : x
  2. Step 2: Convert to fraction form
    7,990.39/11,975.16 = 4,288.29/x
  3. Step 3: Cross multiply
    7,990.39x = 11,975.16 × 4,288.29
  4. Step 4: Simplify right side
    7,990.39x = 51,352,930.05
  5. Step 5: Solve for x
    x = 51,352,930.05/7,990.39
  6. Step 6: Final answer
    x = 6,426.84

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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.