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Finding the Fourth Proportional to 6,639.53, 9,162.93 and 3,656

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Solution

The fourth proportional to 6,639.53, 9,162.93 and 3,656 is: 5,045.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.53 : 9,162.93 = 3,656 : x
  2. Step 2: Convert to fraction form
    6,639.53/9,162.93 = 3,656/x
  3. Step 3: Cross multiply
    6,639.53x = 9,162.93 × 3,656
  4. Step 4: Simplify right side
    6,639.53x = 33,499,672.08
  5. Step 5: Solve for x
    x = 33,499,672.08/6,639.53
  6. Step 6: Final answer
    x = 5,045.49

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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.