Home / 5,135.78-7,087.32-2,898.04

Finding the Fourth Proportional to 5,135.78, 7,087.32 and 2,898.04

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Solution

The fourth proportional to 5,135.78, 7,087.32 and 2,898.04 is: 3,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.78 : 7,087.32 = 2,898.04 : x
  2. Step 2: Convert to fraction form
    5,135.78/7,087.32 = 2,898.04/x
  3. Step 3: Cross multiply
    5,135.78x = 7,087.32 × 2,898.04
  4. Step 4: Simplify right side
    5,135.78x = 20,539,336.85
  5. Step 5: Solve for x
    x = 20,539,336.85/5,135.78
  6. Step 6: Final answer
    x = 3,999.26

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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.