Home / 7,639.56-11,449.76-4,129.43

Finding the Fourth Proportional to 7,639.56, 11,449.76 and 4,129.43

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Solution

The fourth proportional to 7,639.56, 11,449.76 and 4,129.43 is: 6,188.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.56 : 11,449.76 = 4,129.43 : x
  2. Step 2: Convert to fraction form
    7,639.56/11,449.76 = 4,129.43/x
  3. Step 3: Cross multiply
    7,639.56x = 11,449.76 × 4,129.43
  4. Step 4: Simplify right side
    7,639.56x = 47,280,904.54
  5. Step 5: Solve for x
    x = 47,280,904.54/7,639.56
  6. Step 6: Final answer
    x = 6,188.96

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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.