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Finding the Fourth Proportional to 2,892.90, 3,992.16 and 1,714.38

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Solution

The fourth proportional to 2,892.90, 3,992.16 and 1,714.38 is: 2,365.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,892.90 : 3,992.16 = 1,714.38 : x
  2. Step 2: Convert to fraction form
    2,892.90/3,992.16 = 1,714.38/x
  3. Step 3: Cross multiply
    2,892.90x = 3,992.16 × 1,714.38
  4. Step 4: Simplify right side
    2,892.90x = 6,844,079.26
  5. Step 5: Solve for x
    x = 6,844,079.26/2,892.90
  6. Step 6: Final answer
    x = 2,365.82

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1.5x scale

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.