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Finding the Fourth Proportional to 6,651.46, 9,977.16 and 1,720.68

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Solution

The fourth proportional to 6,651.46, 9,977.16 and 1,720.68 is: 2,581.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.46 : 9,977.16 = 1,720.68 : x
  2. Step 2: Convert to fraction form
    6,651.46/9,977.16 = 1,720.68/x
  3. Step 3: Cross multiply
    6,651.46x = 9,977.16 × 1,720.68
  4. Step 4: Simplify right side
    6,651.46x = 17,167,499.67
  5. Step 5: Solve for x
    x = 17,167,499.67/6,651.46
  6. Step 6: Final answer
    x = 2,581.01

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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.