Home / 11,778.46-17,668.50-3,987.34

Finding the Fourth Proportional to 11,778.46, 17,668.50 and 3,987.34

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Solution

The fourth proportional to 11,778.46, 17,668.50 and 3,987.34 is: 5,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778.46 : 17,668.50 = 3,987.34 : x
  2. Step 2: Convert to fraction form
    11,778.46/17,668.50 = 3,987.34/x
  3. Step 3: Cross multiply
    11,778.46x = 17,668.50 × 3,987.34
  4. Step 4: Simplify right side
    11,778.46x = 70,450,316.79
  5. Step 5: Solve for x
    x = 70,450,316.79/11,778.46
  6. Step 6: Final answer
    x = 5,981.28

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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.