Home / 8,239.82-11,376.20-5,412.22

Finding the Fourth Proportional to 8,239.82, 11,376.20 and 5,412.22

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Solution

The fourth proportional to 8,239.82, 11,376.20 and 5,412.22 is: 7,472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.82 : 11,376.20 = 5,412.22 : x
  2. Step 2: Convert to fraction form
    8,239.82/11,376.20 = 5,412.22/x
  3. Step 3: Cross multiply
    8,239.82x = 11,376.20 × 5,412.22
  4. Step 4: Simplify right side
    8,239.82x = 61,570,497.16
  5. Step 5: Solve for x
    x = 61,570,497.16/8,239.82
  6. Step 6: Final answer
    x = 7,472.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.