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Finding the Fourth Proportional to 6,613.79, 9,921.29 and 1,933.88

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Solution

The fourth proportional to 6,613.79, 9,921.29 and 1,933.88 is: 2,900.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.79 : 9,921.29 = 1,933.88 : x
  2. Step 2: Convert to fraction form
    6,613.79/9,921.29 = 1,933.88/x
  3. Step 3: Cross multiply
    6,613.79x = 9,921.29 × 1,933.88
  4. Step 4: Simplify right side
    6,613.79x = 19,186,525.03
  5. Step 5: Solve for x
    x = 19,186,525.03/6,613.79
  6. Step 6: Final answer
    x = 2,900.99

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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.