Home / 7,239.78-9,991.62-4,096.98

Finding the Fourth Proportional to 7,239.78, 9,991.62 and 4,096.98

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Solution

The fourth proportional to 7,239.78, 9,991.62 and 4,096.98 is: 5,654.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.78 : 9,991.62 = 4,096.98 : x
  2. Step 2: Convert to fraction form
    7,239.78/9,991.62 = 4,096.98/x
  3. Step 3: Cross multiply
    7,239.78x = 9,991.62 × 4,096.98
  4. Step 4: Simplify right side
    7,239.78x = 40,935,467.31
  5. Step 5: Solve for x
    x = 40,935,467.31/7,239.78
  6. Step 6: Final answer
    x = 5,654.24

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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.