Home / 3,909.64-5,394.80-2,230.95

Finding the Fourth Proportional to 3,909.64, 5,394.80 and 2,230.95

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Solution

The fourth proportional to 3,909.64, 5,394.80 and 2,230.95 is: 3,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.64 : 5,394.80 = 2,230.95 : x
  2. Step 2: Convert to fraction form
    3,909.64/5,394.80 = 2,230.95/x
  3. Step 3: Cross multiply
    3,909.64x = 5,394.80 × 2,230.95
  4. Step 4: Simplify right side
    3,909.64x = 12,035,529.06
  5. Step 5: Solve for x
    x = 12,035,529.06/3,909.64
  6. Step 6: Final answer
    x = 3,078.42

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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.