Home / 2,172.12-3,257.48-710.96

Finding the Fourth Proportional to 2,172.12, 3,257.48 and 710.96

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Solution

The fourth proportional to 2,172.12, 3,257.48 and 710.96 is: 1,066.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.12 : 3,257.48 = 710.96 : x
  2. Step 2: Convert to fraction form
    2,172.12/3,257.48 = 710.96/x
  3. Step 3: Cross multiply
    2,172.12x = 3,257.48 × 710.96
  4. Step 4: Simplify right side
    2,172.12x = 2,315,937.98
  5. Step 5: Solve for x
    x = 2,315,937.98/2,172.12
  6. Step 6: Final answer
    x = 1,066.21

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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.