Home / 5,486.27-7,571.18-3,128.63

Finding the Fourth Proportional to 5,486.27, 7,571.18 and 3,128.63

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Solution

The fourth proportional to 5,486.27, 7,571.18 and 3,128.63 is: 4,317.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.27 : 7,571.18 = 3,128.63 : x
  2. Step 2: Convert to fraction form
    5,486.27/7,571.18 = 3,128.63/x
  3. Step 3: Cross multiply
    5,486.27x = 7,571.18 × 3,128.63
  4. Step 4: Simplify right side
    5,486.27x = 23,687,401.96
  5. Step 5: Solve for x
    x = 23,687,401.96/5,486.27
  6. Step 6: Final answer
    x = 4,317.58

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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.