Home / 3,190.39-4,402.83-1,931.68

Finding the Fourth Proportional to 3,190.39, 4,402.83 and 1,931.68

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Solution

The fourth proportional to 3,190.39, 4,402.83 and 1,931.68 is: 2,665.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.39 : 4,402.83 = 1,931.68 : x
  2. Step 2: Convert to fraction form
    3,190.39/4,402.83 = 1,931.68/x
  3. Step 3: Cross multiply
    3,190.39x = 4,402.83 × 1,931.68
  4. Step 4: Simplify right side
    3,190.39x = 8,504,841.47
  5. Step 5: Solve for x
    x = 8,504,841.47/3,190.39
  6. Step 6: Final answer
    x = 2,665.77

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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.