Home / 3,177.81-4,384.98-1,998.66

Finding the Fourth Proportional to 3,177.81, 4,384.98 and 1,998.66

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Solution

The fourth proportional to 3,177.81, 4,384.98 and 1,998.66 is: 2,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.81 : 4,384.98 = 1,998.66 : x
  2. Step 2: Convert to fraction form
    3,177.81/4,384.98 = 1,998.66/x
  3. Step 3: Cross multiply
    3,177.81x = 4,384.98 × 1,998.66
  4. Step 4: Simplify right side
    3,177.81x = 8,764,084.13
  5. Step 5: Solve for x
    x = 8,764,084.13/3,177.81
  6. Step 6: Final answer
    x = 2,757.90

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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.