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Finding the Fourth Proportional to 8,679.95, 13,056.88 and 7,868.02

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Solution

The fourth proportional to 8,679.95, 13,056.88 and 7,868.02 is: 11,835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.95 : 13,056.88 = 7,868.02 : x
  2. Step 2: Convert to fraction form
    8,679.95/13,056.88 = 7,868.02/x
  3. Step 3: Cross multiply
    8,679.95x = 13,056.88 × 7,868.02
  4. Step 4: Simplify right side
    8,679.95x = 102,731,792.98
  5. Step 5: Solve for x
    x = 102,731,792.98/8,679.95
  6. Step 6: Final answer
    x = 11,835.53

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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.