Home / 2,305.60-3,181.40-1,310.92

Finding the Fourth Proportional to 2,305.60, 3,181.40 and 1,310.92

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Solution

The fourth proportional to 2,305.60, 3,181.40 and 1,310.92 is: 1,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.60 : 3,181.40 = 1,310.92 : x
  2. Step 2: Convert to fraction form
    2,305.60/3,181.40 = 1,310.92/x
  3. Step 3: Cross multiply
    2,305.60x = 3,181.40 × 1,310.92
  4. Step 4: Simplify right side
    2,305.60x = 4,170,560.89
  5. Step 5: Solve for x
    x = 4,170,560.89/2,305.60
  6. Step 6: Final answer
    x = 1,808.88

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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.