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Finding the Fourth Proportional to 2,817.64, 3,887.12 and 1,697.94

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Solution

The fourth proportional to 2,817.64, 3,887.12 and 1,697.94 is: 2,342.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.64 : 3,887.12 = 1,697.94 : x
  2. Step 2: Convert to fraction form
    2,817.64/3,887.12 = 1,697.94/x
  3. Step 3: Cross multiply
    2,817.64x = 3,887.12 × 1,697.94
  4. Step 4: Simplify right side
    2,817.64x = 6,600,115.35
  5. Step 5: Solve for x
    x = 6,600,115.35/2,817.64
  6. Step 6: Final answer
    x = 2,342.43

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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.