Home / 7,917.96-11,865.58-5,821.56

Finding the Fourth Proportional to 7,917.96, 11,865.58 and 5,821.56

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Solution

The fourth proportional to 7,917.96, 11,865.58 and 5,821.56 is: 8,723.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.96 : 11,865.58 = 5,821.56 : x
  2. Step 2: Convert to fraction form
    7,917.96/11,865.58 = 5,821.56/x
  3. Step 3: Cross multiply
    7,917.96x = 11,865.58 × 5,821.56
  4. Step 4: Simplify right side
    7,917.96x = 69,076,185.90
  5. Step 5: Solve for x
    x = 69,076,185.90/7,917.96
  6. Step 6: Final answer
    x = 8,723.99

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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.