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Finding the Fourth Proportional to 7,901.80, 10,906.32 and 5,249.32

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Solution

The fourth proportional to 7,901.80, 10,906.32 and 5,249.32 is: 7,245.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.80 : 10,906.32 = 5,249.32 : x
  2. Step 2: Convert to fraction form
    7,901.80/10,906.32 = 5,249.32/x
  3. Step 3: Cross multiply
    7,901.80x = 10,906.32 × 5,249.32
  4. Step 4: Simplify right side
    7,901.80x = 57,250,763.70
  5. Step 5: Solve for x
    x = 57,250,763.70/7,901.80
  6. Step 6: Final answer
    x = 7,245.28

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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.