Home / 3,197.76-4,412.96-1,781.56

Finding the Fourth Proportional to 3,197.76, 4,412.96 and 1,781.56

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Solution

The fourth proportional to 3,197.76, 4,412.96 and 1,781.56 is: 2,458.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,197.76 : 4,412.96 = 1,781.56 : x
  2. Step 2: Convert to fraction form
    3,197.76/4,412.96 = 1,781.56/x
  3. Step 3: Cross multiply
    3,197.76x = 4,412.96 × 1,781.56
  4. Step 4: Simplify right side
    3,197.76x = 7,861,953.02
  5. Step 5: Solve for x
    x = 7,861,953.02/3,197.76
  6. Step 6: Final answer
    x = 2,458.58

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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.