Home / 7,945.11-11,909.91-3,783.99

Finding the Fourth Proportional to 7,945.11, 11,909.91 and 3,783.99

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Solution

The fourth proportional to 7,945.11, 11,909.91 and 3,783.99 is: 5,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.11 : 11,909.91 = 3,783.99 : x
  2. Step 2: Convert to fraction form
    7,945.11/11,909.91 = 3,783.99/x
  3. Step 3: Cross multiply
    7,945.11x = 11,909.91 × 3,783.99
  4. Step 4: Simplify right side
    7,945.11x = 45,066,980.34
  5. Step 5: Solve for x
    x = 45,066,980.34/7,945.11
  6. Step 6: Final answer
    x = 5,672.29

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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.