Home / 7,935.78-11,903.40-2,388.90

Finding the Fourth Proportional to 7,935.78, 11,903.40 and 2,388.90

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Solution

The fourth proportional to 7,935.78, 11,903.40 and 2,388.90 is: 3,583.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,935.78 : 11,903.40 = 2,388.90 : x
  2. Step 2: Convert to fraction form
    7,935.78/11,903.40 = 2,388.90/x
  3. Step 3: Cross multiply
    7,935.78x = 11,903.40 × 2,388.90
  4. Step 4: Simplify right side
    7,935.78x = 28,436,032.26
  5. Step 5: Solve for x
    x = 28,436,032.26/7,935.78
  6. Step 6: Final answer
    x = 3,583.27

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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.