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Finding the Fourth Proportional to 6,620.74, 9,928.88 and 2,670.98

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Solution

The fourth proportional to 6,620.74, 9,928.88 and 2,670.98 is: 4,005.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.74 : 9,928.88 = 2,670.98 : x
  2. Step 2: Convert to fraction form
    6,620.74/9,928.88 = 2,670.98/x
  3. Step 3: Cross multiply
    6,620.74x = 9,928.88 × 2,670.98
  4. Step 4: Simplify right side
    6,620.74x = 26,519,786.92
  5. Step 5: Solve for x
    x = 26,519,786.92/6,620.74
  6. Step 6: Final answer
    x = 4,005.56

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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.