Home / 3,847.20-5,307.84-2,354.28

Finding the Fourth Proportional to 3,847.20, 5,307.84 and 2,354.28

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Solution

The fourth proportional to 3,847.20, 5,307.84 and 2,354.28 is: 3,248.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.20 : 5,307.84 = 2,354.28 : x
  2. Step 2: Convert to fraction form
    3,847.20/5,307.84 = 2,354.28/x
  3. Step 3: Cross multiply
    3,847.20x = 5,307.84 × 2,354.28
  4. Step 4: Simplify right side
    3,847.20x = 12,496,141.56
  5. Step 5: Solve for x
    x = 12,496,141.56/3,847.20
  6. Step 6: Final answer
    x = 3,248.11

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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.