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Finding the Fourth Proportional to 9,238.61, 13,859.09 and 4,239.77

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Solution

The fourth proportional to 9,238.61, 13,859.09 and 4,239.77 is: 6,360.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,238.61 : 13,859.09 = 4,239.77 : x
  2. Step 2: Convert to fraction form
    9,238.61/13,859.09 = 4,239.77/x
  3. Step 3: Cross multiply
    9,238.61x = 13,859.09 × 4,239.77
  4. Step 4: Simplify right side
    9,238.61x = 58,759,263.52
  5. Step 5: Solve for x
    x = 58,759,263.52/9,238.61
  6. Step 6: Final answer
    x = 6,360.19

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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.