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Finding the Fourth Proportional to 6,990.32, 9,647.88 and 4,196

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Solution

The fourth proportional to 6,990.32, 9,647.88 and 4,196 is: 5,791.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.32 : 9,647.88 = 4,196 : x
  2. Step 2: Convert to fraction form
    6,990.32/9,647.88 = 4,196/x
  3. Step 3: Cross multiply
    6,990.32x = 9,647.88 × 4,196
  4. Step 4: Simplify right side
    6,990.32x = 40,482,504.48
  5. Step 5: Solve for x
    x = 40,482,504.48/6,990.32
  6. Step 6: Final answer
    x = 5,791.22

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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.