Home / 2,551.20-3,828.40-2,431.36

Finding the Fourth Proportional to 2,551.20, 3,828.40 and 2,431.36

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Solution

The fourth proportional to 2,551.20, 3,828.40 and 2,431.36 is: 3,648.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,551.20 : 3,828.40 = 2,431.36 : x
  2. Step 2: Convert to fraction form
    2,551.20/3,828.40 = 2,431.36/x
  3. Step 3: Cross multiply
    2,551.20x = 3,828.40 × 2,431.36
  4. Step 4: Simplify right side
    2,551.20x = 9,308,218.62
  5. Step 5: Solve for x
    x = 9,308,218.62/2,551.20
  6. Step 6: Final answer
    x = 3,648.56

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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.