Home / 2,156.60-3,234.87-1,230.19

Finding the Fourth Proportional to 2,156.60, 3,234.87 and 1,230.19

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Solution

The fourth proportional to 2,156.60, 3,234.87 and 1,230.19 is: 1,845.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.60 : 3,234.87 = 1,230.19 : x
  2. Step 2: Convert to fraction form
    2,156.60/3,234.87 = 1,230.19/x
  3. Step 3: Cross multiply
    2,156.60x = 3,234.87 × 1,230.19
  4. Step 4: Simplify right side
    2,156.60x = 3,979,496.64
  5. Step 5: Solve for x
    x = 3,979,496.64/2,156.60
  6. Step 6: Final answer
    x = 1,845.26

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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.