Home / 7,991.82-11,030.94-6,400.98

Finding the Fourth Proportional to 7,991.82, 11,030.94 and 6,400.98

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Solution

The fourth proportional to 7,991.82, 11,030.94 and 6,400.98 is: 8,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.82 : 11,030.94 = 6,400.98 : x
  2. Step 2: Convert to fraction form
    7,991.82/11,030.94 = 6,400.98/x
  3. Step 3: Cross multiply
    7,991.82x = 11,030.94 × 6,400.98
  4. Step 4: Simplify right side
    7,991.82x = 70,608,826.32
  5. Step 5: Solve for x
    x = 70,608,826.32/7,991.82
  6. Step 6: Final answer
    x = 8,835.14

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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.