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Finding the Fourth Proportional to 8,713.25, 13,065.88 and 2,788.98

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Solution

The fourth proportional to 8,713.25, 13,065.88 and 2,788.98 is: 4,182.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.25 : 13,065.88 = 2,788.98 : x
  2. Step 2: Convert to fraction form
    8,713.25/13,065.88 = 2,788.98/x
  3. Step 3: Cross multiply
    8,713.25x = 13,065.88 × 2,788.98
  4. Step 4: Simplify right side
    8,713.25x = 36,440,478.00
  5. Step 5: Solve for x
    x = 36,440,478.00/8,713.25
  6. Step 6: Final answer
    x = 4,182.19

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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.