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Finding the Fourth Proportional to 1,682.29, 2,321.02 and 1,018.93

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Solution

The fourth proportional to 1,682.29, 2,321.02 and 1,018.93 is: 1,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.29 : 2,321.02 = 1,018.93 : x
  2. Step 2: Convert to fraction form
    1,682.29/2,321.02 = 1,018.93/x
  3. Step 3: Cross multiply
    1,682.29x = 2,321.02 × 1,018.93
  4. Step 4: Simplify right side
    1,682.29x = 2,364,956.91
  5. Step 5: Solve for x
    x = 2,364,956.91/1,682.29
  6. Step 6: Final answer
    x = 1,405.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.