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Finding the Fourth Proportional to 8,173.11, 11,265.41 and 5,779.99

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Solution

The fourth proportional to 8,173.11, 11,265.41 and 5,779.99 is: 7,966.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,173.11 : 11,265.41 = 5,779.99 : x
  2. Step 2: Convert to fraction form
    8,173.11/11,265.41 = 5,779.99/x
  3. Step 3: Cross multiply
    8,173.11x = 11,265.41 × 5,779.99
  4. Step 4: Simplify right side
    8,173.11x = 65,113,985.68
  5. Step 5: Solve for x
    x = 65,113,985.68/8,173.11
  6. Step 6: Final answer
    x = 7,966.85

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1.5x scale

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.