Home / 3,390.84-5,086.26-1,931.22

Finding the Fourth Proportional to 3,390.84, 5,086.26 and 1,931.22

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Solution

The fourth proportional to 3,390.84, 5,086.26 and 1,931.22 is: 2,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.84 : 5,086.26 = 1,931.22 : x
  2. Step 2: Convert to fraction form
    3,390.84/5,086.26 = 1,931.22/x
  3. Step 3: Cross multiply
    3,390.84x = 5,086.26 × 1,931.22
  4. Step 4: Simplify right side
    3,390.84x = 9,822,687.04
  5. Step 5: Solve for x
    x = 9,822,687.04/3,390.84
  6. Step 6: Final answer
    x = 2,896.83

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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.