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Finding the Fourth Proportional to 6,436.63, 9,655.50 and 1,819.63

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Solution

The fourth proportional to 6,436.63, 9,655.50 and 1,819.63 is: 2,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,436.63 : 9,655.50 = 1,819.63 : x
  2. Step 2: Convert to fraction form
    6,436.63/9,655.50 = 1,819.63/x
  3. Step 3: Cross multiply
    6,436.63x = 9,655.50 × 1,819.63
  4. Step 4: Simplify right side
    6,436.63x = 17,569,389.19
  5. Step 5: Solve for x
    x = 17,569,389.19/6,436.63
  6. Step 6: Final answer
    x = 2,729.60

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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.