Home / 2,252.40-3,107.84-1,320.40

Finding the Fourth Proportional to 2,252.40, 3,107.84 and 1,320.40

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Solution

The fourth proportional to 2,252.40, 3,107.84 and 1,320.40 is: 1,821.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,252.40 : 3,107.84 = 1,320.40 : x
  2. Step 2: Convert to fraction form
    2,252.40/3,107.84 = 1,320.40/x
  3. Step 3: Cross multiply
    2,252.40x = 3,107.84 × 1,320.40
  4. Step 4: Simplify right side
    2,252.40x = 4,103,591.94
  5. Step 5: Solve for x
    x = 4,103,591.94/2,252.40
  6. Step 6: Final answer
    x = 1,821.88

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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.