Home / 3,175.15-4,382.21-1,916.39

Finding the Fourth Proportional to 3,175.15, 4,382.21 and 1,916.39

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Solution

The fourth proportional to 3,175.15, 4,382.21 and 1,916.39 is: 2,644.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.15 : 4,382.21 = 1,916.39 : x
  2. Step 2: Convert to fraction form
    3,175.15/4,382.21 = 1,916.39/x
  3. Step 3: Cross multiply
    3,175.15x = 4,382.21 × 1,916.39
  4. Step 4: Simplify right side
    3,175.15x = 8,398,009.13
  5. Step 5: Solve for x
    x = 8,398,009.13/3,175.15
  6. Step 6: Final answer
    x = 2,644.92

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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.