Home / 3,857.12-5,321.60-2,364.28

Finding the Fourth Proportional to 3,857.12, 5,321.60 and 2,364.28

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Solution

The fourth proportional to 3,857.12, 5,321.60 and 2,364.28 is: 3,261.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.12 : 5,321.60 = 2,364.28 : x
  2. Step 2: Convert to fraction form
    3,857.12/5,321.60 = 2,364.28/x
  3. Step 3: Cross multiply
    3,857.12x = 5,321.60 × 2,364.28
  4. Step 4: Simplify right side
    3,857.12x = 12,581,752.45
  5. Step 5: Solve for x
    x = 12,581,752.45/3,857.12
  6. Step 6: Final answer
    x = 3,261.96

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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.