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Finding the Fourth Proportional to 2,175.97, 3,263.58 and 715.15

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Solution

The fourth proportional to 2,175.97, 3,263.58 and 715.15 is: 1,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.97 : 3,263.58 = 715.15 : x
  2. Step 2: Convert to fraction form
    2,175.97/3,263.58 = 715.15/x
  3. Step 3: Cross multiply
    2,175.97x = 3,263.58 × 715.15
  4. Step 4: Simplify right side
    2,175.97x = 2,333,949.24
  5. Step 5: Solve for x
    x = 2,333,949.24/2,175.97
  6. Step 6: Final answer
    x = 1,072.60

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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.