Home / 9,272.87-12,789.58-6,440.25

Finding the Fourth Proportional to 9,272.87, 12,789.58 and 6,440.25

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Solution

The fourth proportional to 9,272.87, 12,789.58 and 6,440.25 is: 8,882.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272.87 : 12,789.58 = 6,440.25 : x
  2. Step 2: Convert to fraction form
    9,272.87/12,789.58 = 6,440.25/x
  3. Step 3: Cross multiply
    9,272.87x = 12,789.58 × 6,440.25
  4. Step 4: Simplify right side
    9,272.87x = 82,368,064.59
  5. Step 5: Solve for x
    x = 82,368,064.59/9,272.87
  6. Step 6: Final answer
    x = 8,882.69

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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.