Home / 5,163.76-7,128.17-3,487.44

Finding the Fourth Proportional to 5,163.76, 7,128.17 and 3,487.44

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Solution

The fourth proportional to 5,163.76, 7,128.17 and 3,487.44 is: 4,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.76 : 7,128.17 = 3,487.44 : x
  2. Step 2: Convert to fraction form
    5,163.76/7,128.17 = 3,487.44/x
  3. Step 3: Cross multiply
    5,163.76x = 7,128.17 × 3,487.44
  4. Step 4: Simplify right side
    5,163.76x = 24,859,065.18
  5. Step 5: Solve for x
    x = 24,859,065.18/5,163.76
  6. Step 6: Final answer
    x = 4,814.14

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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.