Home / 7,917.69-11,871.74-5,449.80

Finding the Fourth Proportional to 7,917.69, 11,871.74 and 5,449.80

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Solution

The fourth proportional to 7,917.69, 11,871.74 and 5,449.80 is: 8,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.69 : 11,871.74 = 5,449.80 : x
  2. Step 2: Convert to fraction form
    7,917.69/11,871.74 = 5,449.80/x
  3. Step 3: Cross multiply
    7,917.69x = 11,871.74 × 5,449.80
  4. Step 4: Simplify right side
    7,917.69x = 64,698,581.40
  5. Step 5: Solve for x
    x = 64,698,581.40/7,917.69
  6. Step 6: Final answer
    x = 8,171.40

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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.