Home / 8,782.30-12,120.68-5,759.97

Finding the Fourth Proportional to 8,782.30, 12,120.68 and 5,759.97

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Solution

The fourth proportional to 8,782.30, 12,120.68 and 5,759.97 is: 7,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.30 : 12,120.68 = 5,759.97 : x
  2. Step 2: Convert to fraction form
    8,782.30/12,120.68 = 5,759.97/x
  3. Step 3: Cross multiply
    8,782.30x = 12,120.68 × 5,759.97
  4. Step 4: Simplify right side
    8,782.30x = 69,814,753.18
  5. Step 5: Solve for x
    x = 69,814,753.18/8,782.30
  6. Step 6: Final answer
    x = 7,949.48

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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.