Home / 7,841.21-11,763.75-3,894.32

Finding the Fourth Proportional to 7,841.21, 11,763.75 and 3,894.32

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Solution

The fourth proportional to 7,841.21, 11,763.75 and 3,894.32 is: 5,842.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.21 : 11,763.75 = 3,894.32 : x
  2. Step 2: Convert to fraction form
    7,841.21/11,763.75 = 3,894.32/x
  3. Step 3: Cross multiply
    7,841.21x = 11,763.75 × 3,894.32
  4. Step 4: Simplify right side
    7,841.21x = 45,811,748.08
  5. Step 5: Solve for x
    x = 45,811,748.08/7,841.21
  6. Step 6: Final answer
    x = 5,842.44

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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.