Home / 7,131.72-10,696.75-1,867.24

Finding the Fourth Proportional to 7,131.72, 10,696.75 and 1,867.24

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Solution

The fourth proportional to 7,131.72, 10,696.75 and 1,867.24 is: 2,800.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.72 : 10,696.75 = 1,867.24 : x
  2. Step 2: Convert to fraction form
    7,131.72/10,696.75 = 1,867.24/x
  3. Step 3: Cross multiply
    7,131.72x = 10,696.75 × 1,867.24
  4. Step 4: Simplify right side
    7,131.72x = 19,973,399.47
  5. Step 5: Solve for x
    x = 19,973,399.47/7,131.72
  6. Step 6: Final answer
    x = 2,800.64

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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.