Home / 7,905.81-11,860.08-3,228.36

Finding the Fourth Proportional to 7,905.81, 11,860.08 and 3,228.36

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Solution

The fourth proportional to 7,905.81, 11,860.08 and 3,228.36 is: 4,843.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.81 : 11,860.08 = 3,228.36 : x
  2. Step 2: Convert to fraction form
    7,905.81/11,860.08 = 3,228.36/x
  3. Step 3: Cross multiply
    7,905.81x = 11,860.08 × 3,228.36
  4. Step 4: Simplify right side
    7,905.81x = 38,288,607.87
  5. Step 5: Solve for x
    x = 38,288,607.87/7,905.81
  6. Step 6: Final answer
    x = 4,843.10

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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.