Home / 4,128.92-6,191.42-1,206.66

Finding the Fourth Proportional to 4,128.92, 6,191.42 and 1,206.66

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Solution

The fourth proportional to 4,128.92, 6,191.42 and 1,206.66 is: 1,809.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.92 : 6,191.42 = 1,206.66 : x
  2. Step 2: Convert to fraction form
    4,128.92/6,191.42 = 1,206.66/x
  3. Step 3: Cross multiply
    4,128.92x = 6,191.42 × 1,206.66
  4. Step 4: Simplify right side
    4,128.92x = 7,470,938.86
  5. Step 5: Solve for x
    x = 7,470,938.86/4,128.92
  6. Step 6: Final answer
    x = 1,809.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.