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Finding the Fourth Proportional to 8,779.74, 13,169.62 and 3,585.61

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Solution

The fourth proportional to 8,779.74, 13,169.62 and 3,585.61 is: 5,378.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.74 : 13,169.62 = 3,585.61 : x
  2. Step 2: Convert to fraction form
    8,779.74/13,169.62 = 3,585.61/x
  3. Step 3: Cross multiply
    8,779.74x = 13,169.62 × 3,585.61
  4. Step 4: Simplify right side
    8,779.74x = 47,221,103.24
  5. Step 5: Solve for x
    x = 47,221,103.24/8,779.74
  6. Step 6: Final answer
    x = 5,378.42

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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.