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Finding the Fourth Proportional to 1,442.84, 2,167.92 and 1,402.68

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Solution

The fourth proportional to 1,442.84, 2,167.92 and 1,402.68 is: 2,107.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.84 : 2,167.92 = 1,402.68 : x
  2. Step 2: Convert to fraction form
    1,442.84/2,167.92 = 1,402.68/x
  3. Step 3: Cross multiply
    1,442.84x = 2,167.92 × 1,402.68
  4. Step 4: Simplify right side
    1,442.84x = 3,040,898.03
  5. Step 5: Solve for x
    x = 3,040,898.03/1,442.84
  6. Step 6: Final answer
    x = 2,107.58

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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.