Home / 7,991.12-11,026.74-4,453.88

Finding the Fourth Proportional to 7,991.12, 11,026.74 and 4,453.88

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Solution

The fourth proportional to 7,991.12, 11,026.74 and 4,453.88 is: 6,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.12 : 11,026.74 = 4,453.88 : x
  2. Step 2: Convert to fraction form
    7,991.12/11,026.74 = 4,453.88/x
  3. Step 3: Cross multiply
    7,991.12x = 11,026.74 × 4,453.88
  4. Step 4: Simplify right side
    7,991.12x = 49,111,776.75
  5. Step 5: Solve for x
    x = 49,111,776.75/7,991.12
  6. Step 6: Final answer
    x = 6,145.79

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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.