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Finding the Fourth Proportional to 8,381.98, 12,558.44 and 5,088.12

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Solution

The fourth proportional to 8,381.98, 12,558.44 and 5,088.12 is: 7,623.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.98 : 12,558.44 = 5,088.12 : x
  2. Step 2: Convert to fraction form
    8,381.98/12,558.44 = 5,088.12/x
  3. Step 3: Cross multiply
    8,381.98x = 12,558.44 × 5,088.12
  4. Step 4: Simplify right side
    8,381.98x = 63,898,815.36
  5. Step 5: Solve for x
    x = 63,898,815.36/8,381.98
  6. Step 6: Final answer
    x = 7,623.35

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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.