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Finding the Fourth Proportional to 3,910.93, 5,866.39 and 1,315.69

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Solution

The fourth proportional to 3,910.93, 5,866.39 and 1,315.69 is: 1,973.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.93 : 5,866.39 = 1,315.69 : x
  2. Step 2: Convert to fraction form
    3,910.93/5,866.39 = 1,315.69/x
  3. Step 3: Cross multiply
    3,910.93x = 5,866.39 × 1,315.69
  4. Step 4: Simplify right side
    3,910.93x = 7,718,332.70
  5. Step 5: Solve for x
    x = 7,718,332.70/3,910.93
  6. Step 6: Final answer
    x = 1,973.53

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Similar ratio
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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.