Home / 7,811.57-11,719.09-2,265.14

Finding the Fourth Proportional to 7,811.57, 11,719.09 and 2,265.14

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Solution

The fourth proportional to 7,811.57, 11,719.09 and 2,265.14 is: 3,398.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.57 : 11,719.09 = 2,265.14 : x
  2. Step 2: Convert to fraction form
    7,811.57/11,719.09 = 2,265.14/x
  3. Step 3: Cross multiply
    7,811.57x = 11,719.09 × 2,265.14
  4. Step 4: Simplify right side
    7,811.57x = 26,545,379.52
  5. Step 5: Solve for x
    x = 26,545,379.52/7,811.57
  6. Step 6: Final answer
    x = 3,398.21

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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.