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Finding the Fourth Proportional to 8,609, 11,878.59 and 5,070.92

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Solution

The fourth proportional to 8,609, 11,878.59 and 5,070.92 is: 6,996.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609 : 11,878.59 = 5,070.92 : x
  2. Step 2: Convert to fraction form
    8,609/11,878.59 = 5,070.92/x
  3. Step 3: Cross multiply
    8,609x = 11,878.59 × 5,070.92
  4. Step 4: Simplify right side
    8,609x = 60,235,379.60
  5. Step 5: Solve for x
    x = 60,235,379.60/8,609
  6. Step 6: Final answer
    x = 6,996.79

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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.