Home / 3,915.10-5,400.03-2,422.54

Finding the Fourth Proportional to 3,915.10, 5,400.03 and 2,422.54

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Solution

The fourth proportional to 3,915.10, 5,400.03 and 2,422.54 is: 3,341.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.10 : 5,400.03 = 2,422.54 : x
  2. Step 2: Convert to fraction form
    3,915.10/5,400.03 = 2,422.54/x
  3. Step 3: Cross multiply
    3,915.10x = 5,400.03 × 2,422.54
  4. Step 4: Simplify right side
    3,915.10x = 13,081,788.68
  5. Step 5: Solve for x
    x = 13,081,788.68/3,915.10
  6. Step 6: Final answer
    x = 3,341.37

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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.