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Finding the Fourth Proportional to 7,303.56, 10,078.92 and 3,991.56

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Solution

The fourth proportional to 7,303.56, 10,078.92 and 3,991.56 is: 5,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,303.56 : 10,078.92 = 3,991.56 : x
  2. Step 2: Convert to fraction form
    7,303.56/10,078.92 = 3,991.56/x
  3. Step 3: Cross multiply
    7,303.56x = 10,078.92 × 3,991.56
  4. Step 4: Simplify right side
    7,303.56x = 40,230,613.92
  5. Step 5: Solve for x
    x = 40,230,613.92/7,303.56
  6. Step 6: Final answer
    x = 5,508.36

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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.