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Finding the Fourth Proportional to 8,703.80, 13,054.11 and 2,859.05

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Solution

The fourth proportional to 8,703.80, 13,054.11 and 2,859.05 is: 4,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.80 : 13,054.11 = 2,859.05 : x
  2. Step 2: Convert to fraction form
    8,703.80/13,054.11 = 2,859.05/x
  3. Step 3: Cross multiply
    8,703.80x = 13,054.11 × 2,859.05
  4. Step 4: Simplify right side
    8,703.80x = 37,322,317.76
  5. Step 5: Solve for x
    x = 37,322,317.76/8,703.80
  6. Step 6: Final answer
    x = 4,288.05

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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.