Home / 7,939.36-11,920-4,046.48

Finding the Fourth Proportional to 7,939.36, 11,920 and 4,046.48

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Solution

The fourth proportional to 7,939.36, 11,920 and 4,046.48 is: 6,075.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.36 : 11,920 = 4,046.48 : x
  2. Step 2: Convert to fraction form
    7,939.36/11,920 = 4,046.48/x
  3. Step 3: Cross multiply
    7,939.36x = 11,920 × 4,046.48
  4. Step 4: Simplify right side
    7,939.36x = 48,234,041.60
  5. Step 5: Solve for x
    x = 48,234,041.60/7,939.36
  6. Step 6: Final answer
    x = 6,075.31

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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.