Home / 8,965.81-13,448.78-3,122.40

Finding the Fourth Proportional to 8,965.81, 13,448.78 and 3,122.40

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Solution

The fourth proportional to 8,965.81, 13,448.78 and 3,122.40 is: 4,683.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.81 : 13,448.78 = 3,122.40 : x
  2. Step 2: Convert to fraction form
    8,965.81/13,448.78 = 3,122.40/x
  3. Step 3: Cross multiply
    8,965.81x = 13,448.78 × 3,122.40
  4. Step 4: Simplify right side
    8,965.81x = 41,992,455.06
  5. Step 5: Solve for x
    x = 41,992,455.06/8,965.81
  6. Step 6: Final answer
    x = 4,683.62

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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.