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Finding the Fourth Proportional to 8,754.51, 13,129.50 and 3,208.35

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Solution

The fourth proportional to 8,754.51, 13,129.50 and 3,208.35 is: 4,811.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.51 : 13,129.50 = 3,208.35 : x
  2. Step 2: Convert to fraction form
    8,754.51/13,129.50 = 3,208.35/x
  3. Step 3: Cross multiply
    8,754.51x = 13,129.50 × 3,208.35
  4. Step 4: Simplify right side
    8,754.51x = 42,124,031.33
  5. Step 5: Solve for x
    x = 42,124,031.33/8,754.51
  6. Step 6: Final answer
    x = 4,811.69

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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.