Home / 8,667.40-12,999.78-2,824

Finding the Fourth Proportional to 8,667.40, 12,999.78 and 2,824

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Solution

The fourth proportional to 8,667.40, 12,999.78 and 2,824 is: 4,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.40 : 12,999.78 = 2,824 : x
  2. Step 2: Convert to fraction form
    8,667.40/12,999.78 = 2,824/x
  3. Step 3: Cross multiply
    8,667.40x = 12,999.78 × 2,824
  4. Step 4: Simplify right side
    8,667.40x = 36,711,378.72
  5. Step 5: Solve for x
    x = 36,711,378.72/8,667.40
  6. Step 6: Final answer
    x = 4,235.57

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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.