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Finding the Fourth Proportional to 6,651.76, 9,976.83 and 1,720.99

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Solution

The fourth proportional to 6,651.76, 9,976.83 and 1,720.99 is: 2,581.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.76 : 9,976.83 = 1,720.99 : x
  2. Step 2: Convert to fraction form
    6,651.76/9,976.83 = 1,720.99/x
  3. Step 3: Cross multiply
    6,651.76x = 9,976.83 × 1,720.99
  4. Step 4: Simplify right side
    6,651.76x = 17,170,024.66
  5. Step 5: Solve for x
    x = 17,170,024.66/6,651.76
  6. Step 6: Final answer
    x = 2,581.28

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Similar ratio
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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.