Home / 7,899.09-11,838.39-3,213.65

Finding the Fourth Proportional to 7,899.09, 11,838.39 and 3,213.65

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Solution

The fourth proportional to 7,899.09, 11,838.39 and 3,213.65 is: 4,816.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.09 : 11,838.39 = 3,213.65 : x
  2. Step 2: Convert to fraction form
    7,899.09/11,838.39 = 3,213.65/x
  3. Step 3: Cross multiply
    7,899.09x = 11,838.39 × 3,213.65
  4. Step 4: Simplify right side
    7,899.09x = 38,044,459.57
  5. Step 5: Solve for x
    x = 38,044,459.57/7,899.09
  6. Step 6: Final answer
    x = 4,816.31

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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.