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Finding the Fourth Proportional to 3,612.97, 5,420.21 and 2,053.69

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Solution

The fourth proportional to 3,612.97, 5,420.21 and 2,053.69 is: 3,080.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.97 : 5,420.21 = 2,053.69 : x
  2. Step 2: Convert to fraction form
    3,612.97/5,420.21 = 2,053.69/x
  3. Step 3: Cross multiply
    3,612.97x = 5,420.21 × 2,053.69
  4. Step 4: Simplify right side
    3,612.97x = 11,131,431.07
  5. Step 5: Solve for x
    x = 11,131,431.07/3,612.97
  6. Step 6: Final answer
    x = 3,080.96

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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.