Home / 3,520.80-4,858.74-1,948.88

Finding the Fourth Proportional to 3,520.80, 4,858.74 and 1,948.88

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Solution

The fourth proportional to 3,520.80, 4,858.74 and 1,948.88 is: 2,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.80 : 4,858.74 = 1,948.88 : x
  2. Step 2: Convert to fraction form
    3,520.80/4,858.74 = 1,948.88/x
  3. Step 3: Cross multiply
    3,520.80x = 4,858.74 × 1,948.88
  4. Step 4: Simplify right side
    3,520.80x = 9,469,076.92
  5. Step 5: Solve for x
    x = 9,469,076.92/3,520.80
  6. Step 6: Final answer
    x = 2,689.47

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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.