Home / 7,788.34-11,686.96-2,857.34

Finding the Fourth Proportional to 7,788.34, 11,686.96 and 2,857.34

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Solution

The fourth proportional to 7,788.34, 11,686.96 and 2,857.34 is: 4,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.34 : 11,686.96 = 2,857.34 : x
  2. Step 2: Convert to fraction form
    7,788.34/11,686.96 = 2,857.34/x
  3. Step 3: Cross multiply
    7,788.34x = 11,686.96 × 2,857.34
  4. Step 4: Simplify right side
    7,788.34x = 33,393,618.29
  5. Step 5: Solve for x
    x = 33,393,618.29/7,788.34
  6. Step 6: Final answer
    x = 4,287.64

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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.