Home / 2,305.60-3,450.30-2,111.20

Finding the Fourth Proportional to 2,305.60, 3,450.30 and 2,111.20

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Solution

The fourth proportional to 2,305.60, 3,450.30 and 2,111.20 is: 3,159.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.60 : 3,450.30 = 2,111.20 : x
  2. Step 2: Convert to fraction form
    2,305.60/3,450.30 = 2,111.20/x
  3. Step 3: Cross multiply
    2,305.60x = 3,450.30 × 2,111.20
  4. Step 4: Simplify right side
    2,305.60x = 7,284,273.36
  5. Step 5: Solve for x
    x = 7,284,273.36/2,305.60
  6. Step 6: Final answer
    x = 3,159.38

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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.