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Finding the Fourth Proportional to 8,866.63, 13,300.34 and 3,318.53

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Solution

The fourth proportional to 8,866.63, 13,300.34 and 3,318.53 is: 4,977.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.63 : 13,300.34 = 3,318.53 : x
  2. Step 2: Convert to fraction form
    8,866.63/13,300.34 = 3,318.53/x
  3. Step 3: Cross multiply
    8,866.63x = 13,300.34 × 3,318.53
  4. Step 4: Simplify right side
    8,866.63x = 44,137,560.71
  5. Step 5: Solve for x
    x = 44,137,560.71/8,866.63
  6. Step 6: Final answer
    x = 4,977.94

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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.