Home / 3,515.31-5,257.44-3,128.04

Finding the Fourth Proportional to 3,515.31, 5,257.44 and 3,128.04

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Solution

The fourth proportional to 3,515.31, 5,257.44 and 3,128.04 is: 4,678.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.31 : 5,257.44 = 3,128.04 : x
  2. Step 2: Convert to fraction form
    3,515.31/5,257.44 = 3,128.04/x
  3. Step 3: Cross multiply
    3,515.31x = 5,257.44 × 3,128.04
  4. Step 4: Simplify right side
    3,515.31x = 16,445,482.62
  5. Step 5: Solve for x
    x = 16,445,482.62/3,515.31
  6. Step 6: Final answer
    x = 4,678.25

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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.