Home / 5,128.48-7,672.74-3,899.44

Finding the Fourth Proportional to 5,128.48, 7,672.74 and 3,899.44

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Solution

The fourth proportional to 5,128.48, 7,672.74 and 3,899.44 is: 5,833.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.48 : 7,672.74 = 3,899.44 : x
  2. Step 2: Convert to fraction form
    5,128.48/7,672.74 = 3,899.44/x
  3. Step 3: Cross multiply
    5,128.48x = 7,672.74 × 3,899.44
  4. Step 4: Simplify right side
    5,128.48x = 29,919,389.27
  5. Step 5: Solve for x
    x = 29,919,389.27/5,128.48
  6. Step 6: Final answer
    x = 5,833.97

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1.5x scale

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.