Home / 7,890.37-11,842.85-3,997.51

Finding the Fourth Proportional to 7,890.37, 11,842.85 and 3,997.51

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Solution

The fourth proportional to 7,890.37, 11,842.85 and 3,997.51 is: 5,999.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.37 : 11,842.85 = 3,997.51 : x
  2. Step 2: Convert to fraction form
    7,890.37/11,842.85 = 3,997.51/x
  3. Step 3: Cross multiply
    7,890.37x = 11,842.85 × 3,997.51
  4. Step 4: Simplify right side
    7,890.37x = 47,341,911.30
  5. Step 5: Solve for x
    x = 47,341,911.30/7,890.37
  6. Step 6: Final answer
    x = 5,999.96

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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.