Home / 3,865.28-5,333.72-2,186.82

Finding the Fourth Proportional to 3,865.28, 5,333.72 and 2,186.82

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Solution

The fourth proportional to 3,865.28, 5,333.72 and 2,186.82 is: 3,017.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.28 : 5,333.72 = 2,186.82 : x
  2. Step 2: Convert to fraction form
    3,865.28/5,333.72 = 2,186.82/x
  3. Step 3: Cross multiply
    3,865.28x = 5,333.72 × 2,186.82
  4. Step 4: Simplify right side
    3,865.28x = 11,663,885.57
  5. Step 5: Solve for x
    x = 11,663,885.57/3,865.28
  6. Step 6: Final answer
    x = 3,017.60

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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.