Home / 7,857.41-11,784.89-2,309.72

Finding the Fourth Proportional to 7,857.41, 11,784.89 and 2,309.72

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Solution

The fourth proportional to 7,857.41, 11,784.89 and 2,309.72 is: 3,464.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.41 : 11,784.89 = 2,309.72 : x
  2. Step 2: Convert to fraction form
    7,857.41/11,784.89 = 2,309.72/x
  3. Step 3: Cross multiply
    7,857.41x = 11,784.89 × 2,309.72
  4. Step 4: Simplify right side
    7,857.41x = 27,219,742.98
  5. Step 5: Solve for x
    x = 27,219,742.98/7,857.41
  6. Step 6: Final answer
    x = 3,464.22

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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.