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Finding the Fourth Proportional to 7,952.28, 10,998.78 and 6,290.12

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Solution

The fourth proportional to 7,952.28, 10,998.78 and 6,290.12 is: 8,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,952.28 : 10,998.78 = 6,290.12 : x
  2. Step 2: Convert to fraction form
    7,952.28/10,998.78 = 6,290.12/x
  3. Step 3: Cross multiply
    7,952.28x = 10,998.78 × 6,290.12
  4. Step 4: Simplify right side
    7,952.28x = 69,183,646.05
  5. Step 5: Solve for x
    x = 69,183,646.05/7,952.28
  6. Step 6: Final answer
    x = 8,699.85

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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.