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Finding the Fourth Proportional to 3,535.80, 4,879.18 and 1,963.90

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Solution

The fourth proportional to 3,535.80, 4,879.18 and 1,963.90 is: 2,710.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,535.80 : 4,879.18 = 1,963.90 : x
  2. Step 2: Convert to fraction form
    3,535.80/4,879.18 = 1,963.90/x
  3. Step 3: Cross multiply
    3,535.80x = 4,879.18 × 1,963.90
  4. Step 4: Simplify right side
    3,535.80x = 9,582,221.60
  5. Step 5: Solve for x
    x = 9,582,221.60/3,535.80
  6. Step 6: Final answer
    x = 2,710.06

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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.