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Finding the Fourth Proportional to 8,316, 11,471.22 and 5,173.20

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Solution

The fourth proportional to 8,316, 11,471.22 and 5,173.20 is: 7,135.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316 : 11,471.22 = 5,173.20 : x
  2. Step 2: Convert to fraction form
    8,316/11,471.22 = 5,173.20/x
  3. Step 3: Cross multiply
    8,316x = 11,471.22 × 5,173.20
  4. Step 4: Simplify right side
    8,316x = 59,342,915.30
  5. Step 5: Solve for x
    x = 59,342,915.30/8,316
  6. Step 6: Final answer
    x = 7,135.99

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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.