Home / 5,178.66-7,145.88-3,190.08

Finding the Fourth Proportional to 5,178.66, 7,145.88 and 3,190.08

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Solution

The fourth proportional to 5,178.66, 7,145.88 and 3,190.08 is: 4,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.66 : 7,145.88 = 3,190.08 : x
  2. Step 2: Convert to fraction form
    5,178.66/7,145.88 = 3,190.08/x
  3. Step 3: Cross multiply
    5,178.66x = 7,145.88 × 3,190.08
  4. Step 4: Simplify right side
    5,178.66x = 22,795,928.87
  5. Step 5: Solve for x
    x = 22,795,928.87/5,178.66
  6. Step 6: Final answer
    x = 4,401.90

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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.