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Finding the Fourth Proportional to 1,783.92, 2,473.22 and 1,685.64

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Solution

The fourth proportional to 1,783.92, 2,473.22 and 1,685.64 is: 2,336.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.92 : 2,473.22 = 1,685.64 : x
  2. Step 2: Convert to fraction form
    1,783.92/2,473.22 = 1,685.64/x
  3. Step 3: Cross multiply
    1,783.92x = 2,473.22 × 1,685.64
  4. Step 4: Simplify right side
    1,783.92x = 4,168,958.56
  5. Step 5: Solve for x
    x = 4,168,958.56/1,783.92
  6. Step 6: Final answer
    x = 2,336.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.