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Finding the Fourth Proportional to 8,779.70, 13,163.15 and 3,582.90

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Solution

The fourth proportional to 8,779.70, 13,163.15 and 3,582.90 is: 5,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.70 : 13,163.15 = 3,582.90 : x
  2. Step 2: Convert to fraction form
    8,779.70/13,163.15 = 3,582.90/x
  3. Step 3: Cross multiply
    8,779.70x = 13,163.15 × 3,582.90
  4. Step 4: Simplify right side
    8,779.70x = 47,162,250.14
  5. Step 5: Solve for x
    x = 47,162,250.14/8,779.70
  6. Step 6: Final answer
    x = 5,371.74

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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.