Home / 5,176.22-7,142.67-2,938.28

Finding the Fourth Proportional to 5,176.22, 7,142.67 and 2,938.28

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Solution

The fourth proportional to 5,176.22, 7,142.67 and 2,938.28 is: 4,054.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.22 : 7,142.67 = 2,938.28 : x
  2. Step 2: Convert to fraction form
    5,176.22/7,142.67 = 2,938.28/x
  3. Step 3: Cross multiply
    5,176.22x = 7,142.67 × 2,938.28
  4. Step 4: Simplify right side
    5,176.22x = 20,987,128.69
  5. Step 5: Solve for x
    x = 20,987,128.69/5,176.22
  6. Step 6: Final answer
    x = 4,054.53

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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.