Home / 8,639.56-11,923.88-5,056.62

Finding the Fourth Proportional to 8,639.56, 11,923.88 and 5,056.62

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Solution

The fourth proportional to 8,639.56, 11,923.88 and 5,056.62 is: 6,978.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.56 : 11,923.88 = 5,056.62 : x
  2. Step 2: Convert to fraction form
    8,639.56/11,923.88 = 5,056.62/x
  3. Step 3: Cross multiply
    8,639.56x = 11,923.88 × 5,056.62
  4. Step 4: Simplify right side
    8,639.56x = 60,294,530.09
  5. Step 5: Solve for x
    x = 60,294,530.09/8,639.56
  6. Step 6: Final answer
    x = 6,978.89

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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.