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Finding the Fourth Proportional to 2,175.90, 3,263.84 and 715.04

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Solution

The fourth proportional to 2,175.90, 3,263.84 and 715.04 is: 1,072.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.90 : 3,263.84 = 715.04 : x
  2. Step 2: Convert to fraction form
    2,175.90/3,263.84 = 715.04/x
  3. Step 3: Cross multiply
    2,175.90x = 3,263.84 × 715.04
  4. Step 4: Simplify right side
    2,175.90x = 2,333,776.15
  5. Step 5: Solve for x
    x = 2,333,776.15/2,175.90
  6. Step 6: Final answer
    x = 1,072.56

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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.