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Finding the Fourth Proportional to 6,653.56, 9,980.78 and 2,758.28

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Solution

The fourth proportional to 6,653.56, 9,980.78 and 2,758.28 is: 4,137.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,653.56 : 9,980.78 = 2,758.28 : x
  2. Step 2: Convert to fraction form
    6,653.56/9,980.78 = 2,758.28/x
  3. Step 3: Cross multiply
    6,653.56x = 9,980.78 × 2,758.28
  4. Step 4: Simplify right side
    6,653.56x = 27,529,785.86
  5. Step 5: Solve for x
    x = 27,529,785.86/6,653.56
  6. Step 6: Final answer
    x = 4,137.60

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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.