Home / 3,438.42-5,156.40-1,489.56

Finding the Fourth Proportional to 3,438.42, 5,156.40 and 1,489.56

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Solution

The fourth proportional to 3,438.42, 5,156.40 and 1,489.56 is: 2,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.42 : 5,156.40 = 1,489.56 : x
  2. Step 2: Convert to fraction form
    3,438.42/5,156.40 = 1,489.56/x
  3. Step 3: Cross multiply
    3,438.42x = 5,156.40 × 1,489.56
  4. Step 4: Simplify right side
    3,438.42x = 7,680,767.18
  5. Step 5: Solve for x
    x = 7,680,767.18/3,438.42
  6. Step 6: Final answer
    x = 2,233.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.