Home / 3,945.48-5,915.16-2,555.88

Finding the Fourth Proportional to 3,945.48, 5,915.16 and 2,555.88

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Solution

The fourth proportional to 3,945.48, 5,915.16 and 2,555.88 is: 3,831.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.48 : 5,915.16 = 2,555.88 : x
  2. Step 2: Convert to fraction form
    3,945.48/5,915.16 = 2,555.88/x
  3. Step 3: Cross multiply
    3,945.48x = 5,915.16 × 2,555.88
  4. Step 4: Simplify right side
    3,945.48x = 15,118,439.14
  5. Step 5: Solve for x
    x = 15,118,439.14/3,945.48
  6. Step 6: Final answer
    x = 3,831.84

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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.