Home / 3,178.87-4,384.62-2,186.53

Finding the Fourth Proportional to 3,178.87, 4,384.62 and 2,186.53

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Solution

The fourth proportional to 3,178.87, 4,384.62 and 2,186.53 is: 3,015.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.87 : 4,384.62 = 2,186.53 : x
  2. Step 2: Convert to fraction form
    3,178.87/4,384.62 = 2,186.53/x
  3. Step 3: Cross multiply
    3,178.87x = 4,384.62 × 2,186.53
  4. Step 4: Simplify right side
    3,178.87x = 9,587,092.21
  5. Step 5: Solve for x
    x = 9,587,092.21/3,178.87
  6. Step 6: Final answer
    x = 3,015.88

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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.