Home / 3,775.76-5,205.12-2,653.28

Finding the Fourth Proportional to 3,775.76, 5,205.12 and 2,653.28

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Solution

The fourth proportional to 3,775.76, 5,205.12 and 2,653.28 is: 3,657.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,775.76 : 5,205.12 = 2,653.28 : x
  2. Step 2: Convert to fraction form
    3,775.76/5,205.12 = 2,653.28/x
  3. Step 3: Cross multiply
    3,775.76x = 5,205.12 × 2,653.28
  4. Step 4: Simplify right side
    3,775.76x = 13,810,640.79
  5. Step 5: Solve for x
    x = 13,810,640.79/3,775.76
  6. Step 6: Final answer
    x = 3,657.71

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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.