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Finding the Fourth Proportional to 8,372.46, 11,549.79 and 5,719.98

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Solution

The fourth proportional to 8,372.46, 11,549.79 and 5,719.98 is: 7,890.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.46 : 11,549.79 = 5,719.98 : x
  2. Step 2: Convert to fraction form
    8,372.46/11,549.79 = 5,719.98/x
  3. Step 3: Cross multiply
    8,372.46x = 11,549.79 × 5,719.98
  4. Step 4: Simplify right side
    8,372.46x = 66,064,567.80
  5. Step 5: Solve for x
    x = 66,064,567.80/8,372.46
  6. Step 6: Final answer
    x = 7,890.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.