Home / 3,072.40-4,261.64-2,961.72

Finding the Fourth Proportional to 3,072.40, 4,261.64 and 2,961.72

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Solution

The fourth proportional to 3,072.40, 4,261.64 and 2,961.72 is: 4,108.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.40 : 4,261.64 = 2,961.72 : x
  2. Step 2: Convert to fraction form
    3,072.40/4,261.64 = 2,961.72/x
  3. Step 3: Cross multiply
    3,072.40x = 4,261.64 × 2,961.72
  4. Step 4: Simplify right side
    3,072.40x = 12,621,784.42
  5. Step 5: Solve for x
    x = 12,621,784.42/3,072.40
  6. Step 6: Final answer
    x = 4,108.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.