Home / 8,779.12-13,169.76-3,231.52

Finding the Fourth Proportional to 8,779.12, 13,169.76 and 3,231.52

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Solution

The fourth proportional to 8,779.12, 13,169.76 and 3,231.52 is: 4,847.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.12 : 13,169.76 = 3,231.52 : x
  2. Step 2: Convert to fraction form
    8,779.12/13,169.76 = 3,231.52/x
  3. Step 3: Cross multiply
    8,779.12x = 13,169.76 × 3,231.52
  4. Step 4: Simplify right side
    8,779.12x = 42,558,342.84
  5. Step 5: Solve for x
    x = 42,558,342.84/8,779.12
  6. Step 6: Final answer
    x = 4,847.68

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1.5x scale

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.