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Finding the Fourth Proportional to 2,053.94, 3,080.24 and 821.02

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Solution

The fourth proportional to 2,053.94, 3,080.24 and 821.02 is: 1,231.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,053.94 : 3,080.24 = 821.02 : x
  2. Step 2: Convert to fraction form
    2,053.94/3,080.24 = 821.02/x
  3. Step 3: Cross multiply
    2,053.94x = 3,080.24 × 821.02
  4. Step 4: Simplify right side
    2,053.94x = 2,528,938.64
  5. Step 5: Solve for x
    x = 2,528,938.64/2,053.94
  6. Step 6: Final answer
    x = 1,231.26

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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.