Home / 8,539.32-12,805.92-2,991.24

Finding the Fourth Proportional to 8,539.32, 12,805.92 and 2,991.24

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Solution

The fourth proportional to 8,539.32, 12,805.92 and 2,991.24 is: 4,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.32 : 12,805.92 = 2,991.24 : x
  2. Step 2: Convert to fraction form
    8,539.32/12,805.92 = 2,991.24/x
  3. Step 3: Cross multiply
    8,539.32x = 12,805.92 × 2,991.24
  4. Step 4: Simplify right side
    8,539.32x = 38,305,580.14
  5. Step 5: Solve for x
    x = 38,305,580.14/8,539.32
  6. Step 6: Final answer
    x = 4,485.79

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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.