Home / 3,188.90-4,400.44-1,930.65

Finding the Fourth Proportional to 3,188.90, 4,400.44 and 1,930.65

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Solution

The fourth proportional to 3,188.90, 4,400.44 and 1,930.65 is: 2,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.90 : 4,400.44 = 1,930.65 : x
  2. Step 2: Convert to fraction form
    3,188.90/4,400.44 = 1,930.65/x
  3. Step 3: Cross multiply
    3,188.90x = 4,400.44 × 1,930.65
  4. Step 4: Simplify right side
    3,188.90x = 8,495,709.49
  5. Step 5: Solve for x
    x = 8,495,709.49/3,188.90
  6. Step 6: Final answer
    x = 2,664.15

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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.