Home / 7,711.82-11,567.69-1,868.43

Finding the Fourth Proportional to 7,711.82, 11,567.69 and 1,868.43

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Solution

The fourth proportional to 7,711.82, 11,567.69 and 1,868.43 is: 2,802.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.82 : 11,567.69 = 1,868.43 : x
  2. Step 2: Convert to fraction form
    7,711.82/11,567.69 = 1,868.43/x
  3. Step 3: Cross multiply
    7,711.82x = 11,567.69 × 1,868.43
  4. Step 4: Simplify right side
    7,711.82x = 21,613,419.03
  5. Step 5: Solve for x
    x = 21,613,419.03/7,711.82
  6. Step 6: Final answer
    x = 2,802.64

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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.