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Finding the Fourth Proportional to 8,622.70, 12,934.19 and 2,779.34

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Solution

The fourth proportional to 8,622.70, 12,934.19 and 2,779.34 is: 4,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.70 : 12,934.19 = 2,779.34 : x
  2. Step 2: Convert to fraction form
    8,622.70/12,934.19 = 2,779.34/x
  3. Step 3: Cross multiply
    8,622.70x = 12,934.19 × 2,779.34
  4. Step 4: Simplify right side
    8,622.70x = 35,948,511.63
  5. Step 5: Solve for x
    x = 35,948,511.63/8,622.70
  6. Step 6: Final answer
    x = 4,169.06

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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.