Home / 7,678.41-11,517.21-3,781.50

Finding the Fourth Proportional to 7,678.41, 11,517.21 and 3,781.50

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Solution

The fourth proportional to 7,678.41, 11,517.21 and 3,781.50 is: 5,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.41 : 11,517.21 = 3,781.50 : x
  2. Step 2: Convert to fraction form
    7,678.41/11,517.21 = 3,781.50/x
  3. Step 3: Cross multiply
    7,678.41x = 11,517.21 × 3,781.50
  4. Step 4: Simplify right side
    7,678.41x = 43,552,329.62
  5. Step 5: Solve for x
    x = 43,552,329.62/7,678.41
  6. Step 6: Final answer
    x = 5,672.05

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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.