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Finding the Fourth Proportional to 3,612.63, 5,418.10 and 1,146.99

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Solution

The fourth proportional to 3,612.63, 5,418.10 and 1,146.99 is: 1,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.63 : 5,418.10 = 1,146.99 : x
  2. Step 2: Convert to fraction form
    3,612.63/5,418.10 = 1,146.99/x
  3. Step 3: Cross multiply
    3,612.63x = 5,418.10 × 1,146.99
  4. Step 4: Simplify right side
    3,612.63x = 6,214,506.52
  5. Step 5: Solve for x
    x = 6,214,506.52/3,612.63
  6. Step 6: Final answer
    x = 1,720.22

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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.