Home / 4,128.72-6,193.28-1,663.20

Finding the Fourth Proportional to 4,128.72, 6,193.28 and 1,663.20

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Solution

The fourth proportional to 4,128.72, 6,193.28 and 1,663.20 is: 2,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.72 : 6,193.28 = 1,663.20 : x
  2. Step 2: Convert to fraction form
    4,128.72/6,193.28 = 1,663.20/x
  3. Step 3: Cross multiply
    4,128.72x = 6,193.28 × 1,663.20
  4. Step 4: Simplify right side
    4,128.72x = 10,300,684.44
  5. Step 5: Solve for x
    x = 10,300,684.44/4,128.72
  6. Step 6: Final answer
    x = 2,494.89

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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.