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Finding the Fourth Proportional to 3,200.70, 4,799.70 and 1,557.75

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Solution

The fourth proportional to 3,200.70, 4,799.70 and 1,557.75 is: 2,335.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,200.70 : 4,799.70 = 1,557.75 : x
  2. Step 2: Convert to fraction form
    3,200.70/4,799.70 = 1,557.75/x
  3. Step 3: Cross multiply
    3,200.70x = 4,799.70 × 1,557.75
  4. Step 4: Simplify right side
    3,200.70x = 7,476,732.68
  5. Step 5: Solve for x
    x = 7,476,732.68/3,200.70
  6. Step 6: Final answer
    x = 2,335.97

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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.