Home / 3,189.75-4,402.33-1,864.19

Finding the Fourth Proportional to 3,189.75, 4,402.33 and 1,864.19

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Solution

The fourth proportional to 3,189.75, 4,402.33 and 1,864.19 is: 2,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.75 : 4,402.33 = 1,864.19 : x
  2. Step 2: Convert to fraction form
    3,189.75/4,402.33 = 1,864.19/x
  3. Step 3: Cross multiply
    3,189.75x = 4,402.33 × 1,864.19
  4. Step 4: Simplify right side
    3,189.75x = 8,206,752.89
  5. Step 5: Solve for x
    x = 8,206,752.89/3,189.75
  6. Step 6: Final answer
    x = 2,572.85

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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.