Home / 11,776.72-17,666.80-3,987.76

Finding the Fourth Proportional to 11,776.72, 17,666.80 and 3,987.76

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Solution

The fourth proportional to 11,776.72, 17,666.80 and 3,987.76 is: 5,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,776.72 : 17,666.80 = 3,987.76 : x
  2. Step 2: Convert to fraction form
    11,776.72/17,666.80 = 3,987.76/x
  3. Step 3: Cross multiply
    11,776.72x = 17,666.80 × 3,987.76
  4. Step 4: Simplify right side
    11,776.72x = 70,450,958.37
  5. Step 5: Solve for x
    x = 70,450,958.37/11,776.72
  6. Step 6: Final answer
    x = 5,982.22

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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.