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Finding the Fourth Proportional to 11,800.65, 17,703.42 and 3,479.97

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Solution

The fourth proportional to 11,800.65, 17,703.42 and 3,479.97 is: 5,220.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,800.65 : 17,703.42 = 3,479.97 : x
  2. Step 2: Convert to fraction form
    11,800.65/17,703.42 = 3,479.97/x
  3. Step 3: Cross multiply
    11,800.65x = 17,703.42 × 3,479.97
  4. Step 4: Simplify right side
    11,800.65x = 61,607,370.50
  5. Step 5: Solve for x
    x = 61,607,370.50/11,800.65
  6. Step 6: Final answer
    x = 5,220.68

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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.