Home / 5,121.72-7,066.80-3,446.28

Finding the Fourth Proportional to 5,121.72, 7,066.80 and 3,446.28

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Solution

The fourth proportional to 5,121.72, 7,066.80 and 3,446.28 is: 4,755.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.72 : 7,066.80 = 3,446.28 : x
  2. Step 2: Convert to fraction form
    5,121.72/7,066.80 = 3,446.28/x
  3. Step 3: Cross multiply
    5,121.72x = 7,066.80 × 3,446.28
  4. Step 4: Simplify right side
    5,121.72x = 24,354,171.50
  5. Step 5: Solve for x
    x = 24,354,171.50/5,121.72
  6. Step 6: Final answer
    x = 4,755.08

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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.