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Finding the Fourth Proportional to 8,703.31, 13,054.51 and 3,080.61

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Solution

The fourth proportional to 8,703.31, 13,054.51 and 3,080.61 is: 4,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.31 : 13,054.51 = 3,080.61 : x
  2. Step 2: Convert to fraction form
    8,703.31/13,054.51 = 3,080.61/x
  3. Step 3: Cross multiply
    8,703.31x = 13,054.51 × 3,080.61
  4. Step 4: Simplify right side
    8,703.31x = 40,215,854.05
  5. Step 5: Solve for x
    x = 40,215,854.05/8,703.31
  6. Step 6: Final answer
    x = 4,620.75

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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.