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Finding the Fourth Proportional to 2,892.61, 3,991.71 and 1,633.64

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Solution

The fourth proportional to 2,892.61, 3,991.71 and 1,633.64 is: 2,254.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,892.61 : 3,991.71 = 1,633.64 : x
  2. Step 2: Convert to fraction form
    2,892.61/3,991.71 = 1,633.64/x
  3. Step 3: Cross multiply
    2,892.61x = 3,991.71 × 1,633.64
  4. Step 4: Simplify right side
    2,892.61x = 6,521,017.12
  5. Step 5: Solve for x
    x = 6,521,017.12/2,892.61
  6. Step 6: Final answer
    x = 2,254.37

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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.