Home / 5,255.78-7,252.89-2,898.14

Finding the Fourth Proportional to 5,255.78, 7,252.89 and 2,898.14

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Solution

The fourth proportional to 5,255.78, 7,252.89 and 2,898.14 is: 3,999.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.78 : 7,252.89 = 2,898.14 : x
  2. Step 2: Convert to fraction form
    5,255.78/7,252.89 = 2,898.14/x
  3. Step 3: Cross multiply
    5,255.78x = 7,252.89 × 2,898.14
  4. Step 4: Simplify right side
    5,255.78x = 21,019,890.62
  5. Step 5: Solve for x
    x = 21,019,890.62/5,255.78
  6. Step 6: Final answer
    x = 3,999.39

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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.