Home / 3,909.70-5,394.81-2,230.66

Finding the Fourth Proportional to 3,909.70, 5,394.81 and 2,230.66

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Solution

The fourth proportional to 3,909.70, 5,394.81 and 2,230.66 is: 3,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.70 : 5,394.81 = 2,230.66 : x
  2. Step 2: Convert to fraction form
    3,909.70/5,394.81 = 2,230.66/x
  3. Step 3: Cross multiply
    3,909.70x = 5,394.81 × 2,230.66
  4. Step 4: Simplify right side
    3,909.70x = 12,033,986.87
  5. Step 5: Solve for x
    x = 12,033,986.87/3,909.70
  6. Step 6: Final answer
    x = 3,077.98

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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.