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Finding the Fourth Proportional to 6,653.53, 9,981.35 and 2,211.36

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Solution

The fourth proportional to 6,653.53, 9,981.35 and 2,211.36 is: 3,317.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,653.53 : 9,981.35 = 2,211.36 : x
  2. Step 2: Convert to fraction form
    6,653.53/9,981.35 = 2,211.36/x
  3. Step 3: Cross multiply
    6,653.53x = 9,981.35 × 2,211.36
  4. Step 4: Simplify right side
    6,653.53x = 22,072,358.14
  5. Step 5: Solve for x
    x = 22,072,358.14/6,653.53
  6. Step 6: Final answer
    x = 3,317.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.