Home / 7,824.72-11,736.90-3,439.56

Finding the Fourth Proportional to 7,824.72, 11,736.90 and 3,439.56

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Solution

The fourth proportional to 7,824.72, 11,736.90 and 3,439.56 is: 5,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824.72 : 11,736.90 = 3,439.56 : x
  2. Step 2: Convert to fraction form
    7,824.72/11,736.90 = 3,439.56/x
  3. Step 3: Cross multiply
    7,824.72x = 11,736.90 × 3,439.56
  4. Step 4: Simplify right side
    7,824.72x = 40,369,771.76
  5. Step 5: Solve for x
    x = 40,369,771.76/7,824.72
  6. Step 6: Final answer
    x = 5,159.26

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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.