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Finding the Fourth Proportional to 2,650.64, 3,659.70 and 1,656.40

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Solution

The fourth proportional to 2,650.64, 3,659.70 and 1,656.40 is: 2,286.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.64 : 3,659.70 = 1,656.40 : x
  2. Step 2: Convert to fraction form
    2,650.64/3,659.70 = 1,656.40/x
  3. Step 3: Cross multiply
    2,650.64x = 3,659.70 × 1,656.40
  4. Step 4: Simplify right side
    2,650.64x = 6,061,927.08
  5. Step 5: Solve for x
    x = 6,061,927.08/2,650.64
  6. Step 6: Final answer
    x = 2,286.97

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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.