Home / 7,161.72-9,883.25-3,975.07

Finding the Fourth Proportional to 7,161.72, 9,883.25 and 3,975.07

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Solution

The fourth proportional to 7,161.72, 9,883.25 and 3,975.07 is: 5,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.72 : 9,883.25 = 3,975.07 : x
  2. Step 2: Convert to fraction form
    7,161.72/9,883.25 = 3,975.07/x
  3. Step 3: Cross multiply
    7,161.72x = 9,883.25 × 3,975.07
  4. Step 4: Simplify right side
    7,161.72x = 39,286,642.67
  5. Step 5: Solve for x
    x = 39,286,642.67/7,161.72
  6. Step 6: Final answer
    x = 5,485.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.