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Finding the Fourth Proportional to 5,187.69, 7,163.19 and 4,006.71

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Solution

The fourth proportional to 5,187.69, 7,163.19 and 4,006.71 is: 5,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.69 : 7,163.19 = 4,006.71 : x
  2. Step 2: Convert to fraction form
    5,187.69/7,163.19 = 4,006.71/x
  3. Step 3: Cross multiply
    5,187.69x = 7,163.19 × 4,006.71
  4. Step 4: Simplify right side
    5,187.69x = 28,700,825.00
  5. Step 5: Solve for x
    x = 28,700,825.00/5,187.69
  6. Step 6: Final answer
    x = 5,532.49

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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.