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Finding the Fourth Proportional to 8,646.63, 12,969.94 and 2,490.63

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Solution

The fourth proportional to 8,646.63, 12,969.94 and 2,490.63 is: 3,735.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.63 : 12,969.94 = 2,490.63 : x
  2. Step 2: Convert to fraction form
    8,646.63/12,969.94 = 2,490.63/x
  3. Step 3: Cross multiply
    8,646.63x = 12,969.94 × 2,490.63
  4. Step 4: Simplify right side
    8,646.63x = 32,303,321.66
  5. Step 5: Solve for x
    x = 32,303,321.66/8,646.63
  6. Step 6: Final answer
    x = 3,735.94

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1.5x scale

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.