Home / 3,390.54-4,677.39-1,992.30

Finding the Fourth Proportional to 3,390.54, 4,677.39 and 1,992.30

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Solution

The fourth proportional to 3,390.54, 4,677.39 and 1,992.30 is: 2,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.54 : 4,677.39 = 1,992.30 : x
  2. Step 2: Convert to fraction form
    3,390.54/4,677.39 = 1,992.30/x
  3. Step 3: Cross multiply
    3,390.54x = 4,677.39 × 1,992.30
  4. Step 4: Simplify right side
    3,390.54x = 9,318,764.10
  5. Step 5: Solve for x
    x = 9,318,764.10/3,390.54
  6. Step 6: Final answer
    x = 2,748.46

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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.