Home / 8,678.57-11,976.43-4,699.69

Finding the Fourth Proportional to 8,678.57, 11,976.43 and 4,699.69

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Solution

The fourth proportional to 8,678.57, 11,976.43 and 4,699.69 is: 6,485.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.57 : 11,976.43 = 4,699.69 : x
  2. Step 2: Convert to fraction form
    8,678.57/11,976.43 = 4,699.69/x
  3. Step 3: Cross multiply
    8,678.57x = 11,976.43 × 4,699.69
  4. Step 4: Simplify right side
    8,678.57x = 56,285,466.62
  5. Step 5: Solve for x
    x = 56,285,466.62/8,678.57
  6. Step 6: Final answer
    x = 6,485.57

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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.