Home / 3,190.91-4,403.84-1,931.74

Finding the Fourth Proportional to 3,190.91, 4,403.84 and 1,931.74

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Solution

The fourth proportional to 3,190.91, 4,403.84 and 1,931.74 is: 2,666.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.91 : 4,403.84 = 1,931.74 : x
  2. Step 2: Convert to fraction form
    3,190.91/4,403.84 = 1,931.74/x
  3. Step 3: Cross multiply
    3,190.91x = 4,403.84 × 1,931.74
  4. Step 4: Simplify right side
    3,190.91x = 8,507,063.32
  5. Step 5: Solve for x
    x = 8,507,063.32/3,190.91
  6. Step 6: Final answer
    x = 2,666.03

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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.