Home / 7,742.36-11,615.74-2,811.88

Finding the Fourth Proportional to 7,742.36, 11,615.74 and 2,811.88

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Solution

The fourth proportional to 7,742.36, 11,615.74 and 2,811.88 is: 4,218.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.36 : 11,615.74 = 2,811.88 : x
  2. Step 2: Convert to fraction form
    7,742.36/11,615.74 = 2,811.88/x
  3. Step 3: Cross multiply
    7,742.36x = 11,615.74 × 2,811.88
  4. Step 4: Simplify right side
    7,742.36x = 32,662,066.99
  5. Step 5: Solve for x
    x = 32,662,066.99/7,742.36
  6. Step 6: Final answer
    x = 4,218.62

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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.