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Finding the Fourth Proportional to 8,710.28, 12,021.22 and 5,173.49

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Solution

The fourth proportional to 8,710.28, 12,021.22 and 5,173.49 is: 7,140.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.28 : 12,021.22 = 5,173.49 : x
  2. Step 2: Convert to fraction form
    8,710.28/12,021.22 = 5,173.49/x
  3. Step 3: Cross multiply
    8,710.28x = 12,021.22 × 5,173.49
  4. Step 4: Simplify right side
    8,710.28x = 62,191,678.58
  5. Step 5: Solve for x
    x = 62,191,678.58/8,710.28
  6. Step 6: Final answer
    x = 7,140.04

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