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Finding the Fourth Proportional to 6,564, 9,847.62 and 1,947

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Solution

The fourth proportional to 6,564, 9,847.62 and 1,947 is: 2,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,564 : 9,847.62 = 1,947 : x
  2. Step 2: Convert to fraction form
    6,564/9,847.62 = 1,947/x
  3. Step 3: Cross multiply
    6,564x = 9,847.62 × 1,947
  4. Step 4: Simplify right side
    6,564x = 19,173,316.14
  5. Step 5: Solve for x
    x = 19,173,316.14/6,564
  6. Step 6: Final answer
    x = 2,920.98

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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.