Home / 3,914.42-5,396.30-2,421.50

Finding the Fourth Proportional to 3,914.42, 5,396.30 and 2,421.50

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Solution

The fourth proportional to 3,914.42, 5,396.30 and 2,421.50 is: 3,338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.42 : 5,396.30 = 2,421.50 : x
  2. Step 2: Convert to fraction form
    3,914.42/5,396.30 = 2,421.50/x
  3. Step 3: Cross multiply
    3,914.42x = 5,396.30 × 2,421.50
  4. Step 4: Simplify right side
    3,914.42x = 13,067,140.45
  5. Step 5: Solve for x
    x = 13,067,140.45/3,914.42
  6. Step 6: Final answer
    x = 3,338.21

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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.