Home / 8,190.32-12,288.92-3,511.35

Finding the Fourth Proportional to 8,190.32, 12,288.92 and 3,511.35

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Solution

The fourth proportional to 8,190.32, 12,288.92 and 3,511.35 is: 5,268.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.32 : 12,288.92 = 3,511.35 : x
  2. Step 2: Convert to fraction form
    8,190.32/12,288.92 = 3,511.35/x
  3. Step 3: Cross multiply
    8,190.32x = 12,288.92 × 3,511.35
  4. Step 4: Simplify right side
    8,190.32x = 43,150,681.69
  5. Step 5: Solve for x
    x = 43,150,681.69/8,190.32
  6. Step 6: Final answer
    x = 5,268.50

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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.