Home / 7,756.98-11,638.62-4,242.72

Finding the Fourth Proportional to 7,756.98, 11,638.62 and 4,242.72

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Solution

The fourth proportional to 7,756.98, 11,638.62 and 4,242.72 is: 6,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756.98 : 11,638.62 = 4,242.72 : x
  2. Step 2: Convert to fraction form
    7,756.98/11,638.62 = 4,242.72/x
  3. Step 3: Cross multiply
    7,756.98x = 11,638.62 × 4,242.72
  4. Step 4: Simplify right side
    7,756.98x = 49,379,449.49
  5. Step 5: Solve for x
    x = 49,379,449.49/7,756.98
  6. Step 6: Final answer
    x = 6,365.81

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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.