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Finding the Fourth Proportional to 7,210.22, 9,947.77 and 4,022.99

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Solution

The fourth proportional to 7,210.22, 9,947.77 and 4,022.99 is: 5,550.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.22 : 9,947.77 = 4,022.99 : x
  2. Step 2: Convert to fraction form
    7,210.22/9,947.77 = 4,022.99/x
  3. Step 3: Cross multiply
    7,210.22x = 9,947.77 × 4,022.99
  4. Step 4: Simplify right side
    7,210.22x = 40,019,759.12
  5. Step 5: Solve for x
    x = 40,019,759.12/7,210.22
  6. Step 6: Final answer
    x = 5,550.43

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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.