Home / 7,681.37-11,519.77-3,297.78

Finding the Fourth Proportional to 7,681.37, 11,519.77 and 3,297.78

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Solution

The fourth proportional to 7,681.37, 11,519.77 and 3,297.78 is: 4,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.37 : 11,519.77 = 3,297.78 : x
  2. Step 2: Convert to fraction form
    7,681.37/11,519.77 = 3,297.78/x
  3. Step 3: Cross multiply
    7,681.37x = 11,519.77 × 3,297.78
  4. Step 4: Simplify right side
    7,681.37x = 37,989,667.11
  5. Step 5: Solve for x
    x = 37,989,667.11/7,681.37
  6. Step 6: Final answer
    x = 4,945.69

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1.5x scale

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.