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Finding the Fourth Proportional to 9,239.71, 13,859.57 and 3,393.79

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Solution

The fourth proportional to 9,239.71, 13,859.57 and 3,393.79 is: 5,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,239.71 : 13,859.57 = 3,393.79 : x
  2. Step 2: Convert to fraction form
    9,239.71/13,859.57 = 3,393.79/x
  3. Step 3: Cross multiply
    9,239.71x = 13,859.57 × 3,393.79
  4. Step 4: Simplify right side
    9,239.71x = 47,036,470.07
  5. Step 5: Solve for x
    x = 47,036,470.07/9,239.71
  6. Step 6: Final answer
    x = 5,090.69

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Similar ratio
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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.