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Finding the Fourth Proportional to 6,990.10, 9,642.94 and 4,338.36

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Solution

The fourth proportional to 6,990.10, 9,642.94 and 4,338.36 is: 5,984.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.10 : 9,642.94 = 4,338.36 : x
  2. Step 2: Convert to fraction form
    6,990.10/9,642.94 = 4,338.36/x
  3. Step 3: Cross multiply
    6,990.10x = 9,642.94 × 4,338.36
  4. Step 4: Simplify right side
    6,990.10x = 41,834,545.18
  5. Step 5: Solve for x
    x = 41,834,545.18/6,990.10
  6. Step 6: Final answer
    x = 5,984.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.