Home / 2,175.29-3,263.09-1,078.55

Finding the Fourth Proportional to 2,175.29, 3,263.09 and 1,078.55

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Solution

The fourth proportional to 2,175.29, 3,263.09 and 1,078.55 is: 1,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.29 : 3,263.09 = 1,078.55 : x
  2. Step 2: Convert to fraction form
    2,175.29/3,263.09 = 1,078.55/x
  3. Step 3: Cross multiply
    2,175.29x = 3,263.09 × 1,078.55
  4. Step 4: Simplify right side
    2,175.29x = 3,519,384.01
  5. Step 5: Solve for x
    x = 3,519,384.01/2,175.29
  6. Step 6: Final answer
    x = 1,617.90

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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.