Home / 9,961.88-13,747.49-5,485.79

Finding the Fourth Proportional to 9,961.88, 13,747.49 and 5,485.79

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Solution

The fourth proportional to 9,961.88, 13,747.49 and 5,485.79 is: 7,570.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,961.88 : 13,747.49 = 5,485.79 : x
  2. Step 2: Convert to fraction form
    9,961.88/13,747.49 = 5,485.79/x
  3. Step 3: Cross multiply
    9,961.88x = 13,747.49 × 5,485.79
  4. Step 4: Simplify right side
    9,961.88x = 75,415,881.01
  5. Step 5: Solve for x
    x = 75,415,881.01/9,961.88
  6. Step 6: Final answer
    x = 7,570.44

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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.