Home / 3,871.96-5,343.32-2,103.60

Finding the Fourth Proportional to 3,871.96, 5,343.32 and 2,103.60

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Solution

The fourth proportional to 3,871.96, 5,343.32 and 2,103.60 is: 2,902.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.96 : 5,343.32 = 2,103.60 : x
  2. Step 2: Convert to fraction form
    3,871.96/5,343.32 = 2,103.60/x
  3. Step 3: Cross multiply
    3,871.96x = 5,343.32 × 2,103.60
  4. Step 4: Simplify right side
    3,871.96x = 11,240,207.95
  5. Step 5: Solve for x
    x = 11,240,207.95/3,871.96
  6. Step 6: Final answer
    x = 2,902.98

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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.