Home / 3,175.19-4,380.75-1,916.65

Finding the Fourth Proportional to 3,175.19, 4,380.75 and 1,916.65

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Solution

The fourth proportional to 3,175.19, 4,380.75 and 1,916.65 is: 2,644.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.19 : 4,380.75 = 1,916.65 : x
  2. Step 2: Convert to fraction form
    3,175.19/4,380.75 = 1,916.65/x
  3. Step 3: Cross multiply
    3,175.19x = 4,380.75 × 1,916.65
  4. Step 4: Simplify right side
    3,175.19x = 8,396,364.49
  5. Step 5: Solve for x
    x = 8,396,364.49/3,175.19
  6. Step 6: Final answer
    x = 2,644.37

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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.