Home / 3,181.60-4,381.14-2,739.16

Finding the Fourth Proportional to 3,181.60, 4,381.14 and 2,739.16

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Solution

The fourth proportional to 3,181.60, 4,381.14 and 2,739.16 is: 3,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.60 : 4,381.14 = 2,739.16 : x
  2. Step 2: Convert to fraction form
    3,181.60/4,381.14 = 2,739.16/x
  3. Step 3: Cross multiply
    3,181.60x = 4,381.14 × 2,739.16
  4. Step 4: Simplify right side
    3,181.60x = 12,000,643.44
  5. Step 5: Solve for x
    x = 12,000,643.44/3,181.60
  6. Step 6: Final answer
    x = 3,771.89

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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.