Home / 3,956.50-5,445.40-3,390.61

Finding the Fourth Proportional to 3,956.50, 5,445.40 and 3,390.61

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Solution

The fourth proportional to 3,956.50, 5,445.40 and 3,390.61 is: 4,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.50 : 5,445.40 = 3,390.61 : x
  2. Step 2: Convert to fraction form
    3,956.50/5,445.40 = 3,390.61/x
  3. Step 3: Cross multiply
    3,956.50x = 5,445.40 × 3,390.61
  4. Step 4: Simplify right side
    3,956.50x = 18,463,231.71
  5. Step 5: Solve for x
    x = 18,463,231.71/3,956.50
  6. Step 6: Final answer
    x = 4,666.56

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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.