Home / 6,409.15-9,614.58-3,121.81

Finding the Fourth Proportional to 6,409.15, 9,614.58 and 3,121.81

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Solution

The fourth proportional to 6,409.15, 9,614.58 and 3,121.81 is: 4,683.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,409.15 : 9,614.58 = 3,121.81 : x
  2. Step 2: Convert to fraction form
    6,409.15/9,614.58 = 3,121.81/x
  3. Step 3: Cross multiply
    6,409.15x = 9,614.58 × 3,121.81
  4. Step 4: Simplify right side
    6,409.15x = 30,014,891.99
  5. Step 5: Solve for x
    x = 30,014,891.99/6,409.15
  6. Step 6: Final answer
    x = 4,683.13

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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.