Home / 2,155.67-3,234.23-1,332.80

Finding the Fourth Proportional to 2,155.67, 3,234.23 and 1,332.80

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Solution

The fourth proportional to 2,155.67, 3,234.23 and 1,332.80 is: 1,999.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.67 : 3,234.23 = 1,332.80 : x
  2. Step 2: Convert to fraction form
    2,155.67/3,234.23 = 1,332.80/x
  3. Step 3: Cross multiply
    2,155.67x = 3,234.23 × 1,332.80
  4. Step 4: Simplify right side
    2,155.67x = 4,310,581.74
  5. Step 5: Solve for x
    x = 4,310,581.74/2,155.67
  6. Step 6: Final answer
    x = 1,999.65

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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.