Home / 1,573.42-2,172.12-1,218.54

Finding the Fourth Proportional to 1,573.42, 2,172.12 and 1,218.54

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Solution

The fourth proportional to 1,573.42, 2,172.12 and 1,218.54 is: 1,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.42 : 2,172.12 = 1,218.54 : x
  2. Step 2: Convert to fraction form
    1,573.42/2,172.12 = 1,218.54/x
  3. Step 3: Cross multiply
    1,573.42x = 2,172.12 × 1,218.54
  4. Step 4: Simplify right side
    1,573.42x = 2,646,815.10
  5. Step 5: Solve for x
    x = 2,646,815.10/1,573.42
  6. Step 6: Final answer
    x = 1,682.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.