Home / 3,238.31-4,857.74-929.81

Finding the Fourth Proportional to 3,238.31, 4,857.74 and 929.81

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Solution

The fourth proportional to 3,238.31, 4,857.74 and 929.81 is: 1,394.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.31 : 4,857.74 = 929.81 : x
  2. Step 2: Convert to fraction form
    3,238.31/4,857.74 = 929.81/x
  3. Step 3: Cross multiply
    3,238.31x = 4,857.74 × 929.81
  4. Step 4: Simplify right side
    3,238.31x = 4,516,786.21
  5. Step 5: Solve for x
    x = 4,516,786.21/3,238.31
  6. Step 6: Final answer
    x = 1,394.80

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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.