Home / 7,943.96-11,914.36-2,678.45

Finding the Fourth Proportional to 7,943.96, 11,914.36 and 2,678.45

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Solution

The fourth proportional to 7,943.96, 11,914.36 and 2,678.45 is: 4,017.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.96 : 11,914.36 = 2,678.45 : x
  2. Step 2: Convert to fraction form
    7,943.96/11,914.36 = 2,678.45/x
  3. Step 3: Cross multiply
    7,943.96x = 11,914.36 × 2,678.45
  4. Step 4: Simplify right side
    7,943.96x = 31,912,017.54
  5. Step 5: Solve for x
    x = 31,912,017.54/7,943.96
  6. Step 6: Final answer
    x = 4,017.14

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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.