Home / 7,218.88-10,828.40-3,112

Finding the Fourth Proportional to 7,218.88, 10,828.40 and 3,112

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Solution

The fourth proportional to 7,218.88, 10,828.40 and 3,112 is: 4,668.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.88 : 10,828.40 = 3,112 : x
  2. Step 2: Convert to fraction form
    7,218.88/10,828.40 = 3,112/x
  3. Step 3: Cross multiply
    7,218.88x = 10,828.40 × 3,112
  4. Step 4: Simplify right side
    7,218.88x = 33,697,980.80
  5. Step 5: Solve for x
    x = 33,697,980.80/7,218.88
  6. Step 6: Final answer
    x = 4,668.03

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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.