Home / 2,390.96-3,299.34-1,396.11

Finding the Fourth Proportional to 2,390.96, 3,299.34 and 1,396.11

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Solution

The fourth proportional to 2,390.96, 3,299.34 and 1,396.11 is: 1,926.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.96 : 3,299.34 = 1,396.11 : x
  2. Step 2: Convert to fraction form
    2,390.96/3,299.34 = 1,396.11/x
  3. Step 3: Cross multiply
    2,390.96x = 3,299.34 × 1,396.11
  4. Step 4: Simplify right side
    2,390.96x = 4,606,241.57
  5. Step 5: Solve for x
    x = 4,606,241.57/2,390.96
  6. Step 6: Final answer
    x = 1,926.53

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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.