Home / 4,269.40-6,389.70-3,923.80

Finding the Fourth Proportional to 4,269.40, 6,389.70 and 3,923.80

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Solution

The fourth proportional to 4,269.40, 6,389.70 and 3,923.80 is: 5,872.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,269.40 : 6,389.70 = 3,923.80 : x
  2. Step 2: Convert to fraction form
    4,269.40/6,389.70 = 3,923.80/x
  3. Step 3: Cross multiply
    4,269.40x = 6,389.70 × 3,923.80
  4. Step 4: Simplify right side
    4,269.40x = 25,071,904.86
  5. Step 5: Solve for x
    x = 25,071,904.86/4,269.40
  6. Step 6: Final answer
    x = 5,872.47

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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.