Home / 2,572.20-3,859.67-1,091.65

Finding the Fourth Proportional to 2,572.20, 3,859.67 and 1,091.65

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Solution

The fourth proportional to 2,572.20, 3,859.67 and 1,091.65 is: 1,638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.20 : 3,859.67 = 1,091.65 : x
  2. Step 2: Convert to fraction form
    2,572.20/3,859.67 = 1,091.65/x
  3. Step 3: Cross multiply
    2,572.20x = 3,859.67 × 1,091.65
  4. Step 4: Simplify right side
    2,572.20x = 4,213,408.76
  5. Step 5: Solve for x
    x = 4,213,408.76/2,572.20
  6. Step 6: Final answer
    x = 1,638.06

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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.