Home / 3,535.20-4,878.68-1,963.40

Finding the Fourth Proportional to 3,535.20, 4,878.68 and 1,963.40

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Solution

The fourth proportional to 3,535.20, 4,878.68 and 1,963.40 is: 2,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,535.20 : 4,878.68 = 1,963.40 : x
  2. Step 2: Convert to fraction form
    3,535.20/4,878.68 = 1,963.40/x
  3. Step 3: Cross multiply
    3,535.20x = 4,878.68 × 1,963.40
  4. Step 4: Simplify right side
    3,535.20x = 9,578,800.31
  5. Step 5: Solve for x
    x = 9,578,800.31/3,535.20
  6. Step 6: Final answer
    x = 2,709.55

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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.