Home / 3,394.88-4,685.84-1,979.76

Finding the Fourth Proportional to 3,394.88, 4,685.84 and 1,979.76

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Solution

The fourth proportional to 3,394.88, 4,685.84 and 1,979.76 is: 2,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.88 : 4,685.84 = 1,979.76 : x
  2. Step 2: Convert to fraction form
    3,394.88/4,685.84 = 1,979.76/x
  3. Step 3: Cross multiply
    3,394.88x = 4,685.84 × 1,979.76
  4. Step 4: Simplify right side
    3,394.88x = 9,276,838.60
  5. Step 5: Solve for x
    x = 9,276,838.60/3,394.88
  6. Step 6: Final answer
    x = 2,732.60

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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.