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Finding the Fourth Proportional to 8,518.98, 12,780.40 and 2,596.39

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Solution

The fourth proportional to 8,518.98, 12,780.40 and 2,596.39 is: 3,895.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.98 : 12,780.40 = 2,596.39 : x
  2. Step 2: Convert to fraction form
    8,518.98/12,780.40 = 2,596.39/x
  3. Step 3: Cross multiply
    8,518.98x = 12,780.40 × 2,596.39
  4. Step 4: Simplify right side
    8,518.98x = 33,182,902.76
  5. Step 5: Solve for x
    x = 33,182,902.76/8,518.98
  6. Step 6: Final answer
    x = 3,895.17

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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.