Home / 7,943.80-11,914.26-2,678.32

Finding the Fourth Proportional to 7,943.80, 11,914.26 and 2,678.32

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Solution

The fourth proportional to 7,943.80, 11,914.26 and 2,678.32 is: 4,016.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.80 : 11,914.26 = 2,678.32 : x
  2. Step 2: Convert to fraction form
    7,943.80/11,914.26 = 2,678.32/x
  3. Step 3: Cross multiply
    7,943.80x = 11,914.26 × 2,678.32
  4. Step 4: Simplify right side
    7,943.80x = 31,910,200.84
  5. Step 5: Solve for x
    x = 31,910,200.84/7,943.80
  6. Step 6: Final answer
    x = 4,016.99

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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.