Home / 9,111.72-13,656.24-3,261.90

Finding the Fourth Proportional to 9,111.72, 13,656.24 and 3,261.90

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Solution

The fourth proportional to 9,111.72, 13,656.24 and 3,261.90 is: 4,888.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.72 : 13,656.24 = 3,261.90 : x
  2. Step 2: Convert to fraction form
    9,111.72/13,656.24 = 3,261.90/x
  3. Step 3: Cross multiply
    9,111.72x = 13,656.24 × 3,261.90
  4. Step 4: Simplify right side
    9,111.72x = 44,545,289.26
  5. Step 5: Solve for x
    x = 44,545,289.26/9,111.72
  6. Step 6: Final answer
    x = 4,888.79

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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.