Home / 2,175.19-3,261.90-693.93

Finding the Fourth Proportional to 2,175.19, 3,261.90 and 693.93

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Solution

The fourth proportional to 2,175.19, 3,261.90 and 693.93 is: 1,040.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.19 : 3,261.90 = 693.93 : x
  2. Step 2: Convert to fraction form
    2,175.19/3,261.90 = 693.93/x
  3. Step 3: Cross multiply
    2,175.19x = 3,261.90 × 693.93
  4. Step 4: Simplify right side
    2,175.19x = 2,263,530.27
  5. Step 5: Solve for x
    x = 2,263,530.27/2,175.19
  6. Step 6: Final answer
    x = 1,040.61

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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.