Home / 5,290.85-7,936.31-2,170.06

Finding the Fourth Proportional to 5,290.85, 7,936.31 and 2,170.06

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Solution

The fourth proportional to 5,290.85, 7,936.31 and 2,170.06 is: 3,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.85 : 7,936.31 = 2,170.06 : x
  2. Step 2: Convert to fraction form
    5,290.85/7,936.31 = 2,170.06/x
  3. Step 3: Cross multiply
    5,290.85x = 7,936.31 × 2,170.06
  4. Step 4: Simplify right side
    5,290.85x = 17,222,254.46
  5. Step 5: Solve for x
    x = 17,222,254.46/5,290.85
  6. Step 6: Final answer
    x = 3,255.10

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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.