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Finding the Fourth Proportional to 3,323.32, 4,984.99 and 857.97

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Solution

The fourth proportional to 3,323.32, 4,984.99 and 857.97 is: 1,286.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,323.32 : 4,984.99 = 857.97 : x
  2. Step 2: Convert to fraction form
    3,323.32/4,984.99 = 857.97/x
  3. Step 3: Cross multiply
    3,323.32x = 4,984.99 × 857.97
  4. Step 4: Simplify right side
    3,323.32x = 4,276,962.63
  5. Step 5: Solve for x
    x = 4,276,962.63/3,323.32
  6. Step 6: Final answer
    x = 1,286.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.