Home / 7,942.84-11,918.14-5,617.79

Finding the Fourth Proportional to 7,942.84, 11,918.14 and 5,617.79

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Solution

The fourth proportional to 7,942.84, 11,918.14 and 5,617.79 is: 8,429.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.84 : 11,918.14 = 5,617.79 : x
  2. Step 2: Convert to fraction form
    7,942.84/11,918.14 = 5,617.79/x
  3. Step 3: Cross multiply
    7,942.84x = 11,918.14 × 5,617.79
  4. Step 4: Simplify right side
    7,942.84x = 66,953,548.12
  5. Step 5: Solve for x
    x = 66,953,548.12/7,942.84
  6. Step 6: Final answer
    x = 8,429.42

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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.