Home / 2,127.66-3,188.85-1,086.81

Finding the Fourth Proportional to 2,127.66, 3,188.85 and 1,086.81

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Solution

The fourth proportional to 2,127.66, 3,188.85 and 1,086.81 is: 1,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.66 : 3,188.85 = 1,086.81 : x
  2. Step 2: Convert to fraction form
    2,127.66/3,188.85 = 1,086.81/x
  3. Step 3: Cross multiply
    2,127.66x = 3,188.85 × 1,086.81
  4. Step 4: Simplify right side
    2,127.66x = 3,465,674.07
  5. Step 5: Solve for x
    x = 3,465,674.07/2,127.66
  6. Step 6: Final answer
    x = 1,628.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.