Home / 2,554.20-3,828.11-1,320.89

Finding the Fourth Proportional to 2,554.20, 3,828.11 and 1,320.89

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Solution

The fourth proportional to 2,554.20, 3,828.11 and 1,320.89 is: 1,979.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,554.20 : 3,828.11 = 1,320.89 : x
  2. Step 2: Convert to fraction form
    2,554.20/3,828.11 = 1,320.89/x
  3. Step 3: Cross multiply
    2,554.20x = 3,828.11 × 1,320.89
  4. Step 4: Simplify right side
    2,554.20x = 5,056,486.47
  5. Step 5: Solve for x
    x = 5,056,486.47/2,554.20
  6. Step 6: Final answer
    x = 1,979.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.