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Finding the Fourth Proportional to 8,491.55, 12,734.89 and 2,646.59

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Solution

The fourth proportional to 8,491.55, 12,734.89 and 2,646.59 is: 3,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.55 : 12,734.89 = 2,646.59 : x
  2. Step 2: Convert to fraction form
    8,491.55/12,734.89 = 2,646.59/x
  3. Step 3: Cross multiply
    8,491.55x = 12,734.89 × 2,646.59
  4. Step 4: Simplify right side
    8,491.55x = 33,703,962.23
  5. Step 5: Solve for x
    x = 33,703,962.23/8,491.55
  6. Step 6: Final answer
    x = 3,969.12

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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.