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Finding the Fourth Proportional to 6,990.97, 9,650.57 and 4,998.07

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Solution

The fourth proportional to 6,990.97, 9,650.57 and 4,998.07 is: 6,899.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.97 : 9,650.57 = 4,998.07 : x
  2. Step 2: Convert to fraction form
    6,990.97/9,650.57 = 4,998.07/x
  3. Step 3: Cross multiply
    6,990.97x = 9,650.57 × 4,998.07
  4. Step 4: Simplify right side
    6,990.97x = 48,234,224.40
  5. Step 5: Solve for x
    x = 48,234,224.40/6,990.97
  6. Step 6: Final answer
    x = 6,899.50

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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.