Home / 9,135.69-13,705.80-2,561.79

Finding the Fourth Proportional to 9,135.69, 13,705.80 and 2,561.79

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Solution

The fourth proportional to 9,135.69, 13,705.80 and 2,561.79 is: 3,843.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.69 : 13,705.80 = 2,561.79 : x
  2. Step 2: Convert to fraction form
    9,135.69/13,705.80 = 2,561.79/x
  3. Step 3: Cross multiply
    9,135.69x = 13,705.80 × 2,561.79
  4. Step 4: Simplify right side
    9,135.69x = 35,111,381.38
  5. Step 5: Solve for x
    x = 35,111,381.38/9,135.69
  6. Step 6: Final answer
    x = 3,843.32

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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.