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Finding the Fourth Proportional to 8,965.56, 13,439.16 and 3,118.98

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Solution

The fourth proportional to 8,965.56, 13,439.16 and 3,118.98 is: 4,675.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.56 : 13,439.16 = 3,118.98 : x
  2. Step 2: Convert to fraction form
    8,965.56/13,439.16 = 3,118.98/x
  3. Step 3: Cross multiply
    8,965.56x = 13,439.16 × 3,118.98
  4. Step 4: Simplify right side
    8,965.56x = 41,916,471.26
  5. Step 5: Solve for x
    x = 41,916,471.26/8,965.56
  6. Step 6: Final answer
    x = 4,675.28

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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.