Home / 3,175.13-4,381.61-1,917.23

Finding the Fourth Proportional to 3,175.13, 4,381.61 and 1,917.23

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Solution

The fourth proportional to 3,175.13, 4,381.61 and 1,917.23 is: 2,645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.13 : 4,381.61 = 1,917.23 : x
  2. Step 2: Convert to fraction form
    3,175.13/4,381.61 = 1,917.23/x
  3. Step 3: Cross multiply
    3,175.13x = 4,381.61 × 1,917.23
  4. Step 4: Simplify right side
    3,175.13x = 8,400,522.65
  5. Step 5: Solve for x
    x = 8,400,522.65/3,175.13
  6. Step 6: Final answer
    x = 2,645.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.