Home / 7,738.36-11,607.90-3,121

Finding the Fourth Proportional to 7,738.36, 11,607.90 and 3,121

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Solution

The fourth proportional to 7,738.36, 11,607.90 and 3,121 is: 4,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,738.36 : 11,607.90 = 3,121 : x
  2. Step 2: Convert to fraction form
    7,738.36/11,607.90 = 3,121/x
  3. Step 3: Cross multiply
    7,738.36x = 11,607.90 × 3,121
  4. Step 4: Simplify right side
    7,738.36x = 36,228,255.90
  5. Step 5: Solve for x
    x = 36,228,255.90/7,738.36
  6. Step 6: Final answer
    x = 4,681.65

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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.