Home / 3,123.54-4,312.96-1,930.26

Finding the Fourth Proportional to 3,123.54, 4,312.96 and 1,930.26

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Solution

The fourth proportional to 3,123.54, 4,312.96 and 1,930.26 is: 2,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.54 : 4,312.96 = 1,930.26 : x
  2. Step 2: Convert to fraction form
    3,123.54/4,312.96 = 1,930.26/x
  3. Step 3: Cross multiply
    3,123.54x = 4,312.96 × 1,930.26
  4. Step 4: Simplify right side
    3,123.54x = 8,325,112.60
  5. Step 5: Solve for x
    x = 8,325,112.60/3,123.54
  6. Step 6: Final answer
    x = 2,665.29

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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.