Home / 3,175.60-4,379.61-1,916.39

Finding the Fourth Proportional to 3,175.60, 4,379.61 and 1,916.39

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Solution

The fourth proportional to 3,175.60, 4,379.61 and 1,916.39 is: 2,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.60 : 4,379.61 = 1,916.39 : x
  2. Step 2: Convert to fraction form
    3,175.60/4,379.61 = 1,916.39/x
  3. Step 3: Cross multiply
    3,175.60x = 4,379.61 × 1,916.39
  4. Step 4: Simplify right side
    3,175.60x = 8,393,011.72
  5. Step 5: Solve for x
    x = 8,393,011.72/3,175.60
  6. Step 6: Final answer
    x = 2,642.97

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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.