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Finding the Fourth Proportional to 6,599.34, 9,879.57 and 3,994.38

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Solution

The fourth proportional to 6,599.34, 9,879.57 and 3,994.38 is: 5,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,599.34 : 9,879.57 = 3,994.38 : x
  2. Step 2: Convert to fraction form
    6,599.34/9,879.57 = 3,994.38/x
  3. Step 3: Cross multiply
    6,599.34x = 9,879.57 × 3,994.38
  4. Step 4: Simplify right side
    6,599.34x = 39,462,756.82
  5. Step 5: Solve for x
    x = 39,462,756.82/6,599.34
  6. Step 6: Final answer
    x = 5,979.80

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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.