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Finding the Fourth Proportional to 3,636.96, 5,457.96 and 1,445.48

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Solution

The fourth proportional to 3,636.96, 5,457.96 and 1,445.48 is: 2,169.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.96 : 5,457.96 = 1,445.48 : x
  2. Step 2: Convert to fraction form
    3,636.96/5,457.96 = 1,445.48/x
  3. Step 3: Cross multiply
    3,636.96x = 5,457.96 × 1,445.48
  4. Step 4: Simplify right side
    3,636.96x = 7,889,372.02
  5. Step 5: Solve for x
    x = 7,889,372.02/3,636.96
  6. Step 6: Final answer
    x = 2,169.22

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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.