Home / 7,842.09-11,760.69-3,161.91

Finding the Fourth Proportional to 7,842.09, 11,760.69 and 3,161.91

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Solution

The fourth proportional to 7,842.09, 11,760.69 and 3,161.91 is: 4,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.09 : 11,760.69 = 3,161.91 : x
  2. Step 2: Convert to fraction form
    7,842.09/11,760.69 = 3,161.91/x
  3. Step 3: Cross multiply
    7,842.09x = 11,760.69 × 3,161.91
  4. Step 4: Simplify right side
    7,842.09x = 37,186,243.32
  5. Step 5: Solve for x
    x = 37,186,243.32/7,842.09
  6. Step 6: Final answer
    x = 4,741.88

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1.5x scale

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.