Home / 1,425.22-2,135.42-1,012.30

Finding the Fourth Proportional to 1,425.22, 2,135.42 and 1,012.30

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Solution

The fourth proportional to 1,425.22, 2,135.42 and 1,012.30 is: 1,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.22 : 2,135.42 = 1,012.30 : x
  2. Step 2: Convert to fraction form
    1,425.22/2,135.42 = 1,012.30/x
  3. Step 3: Cross multiply
    1,425.22x = 2,135.42 × 1,012.30
  4. Step 4: Simplify right side
    1,425.22x = 2,161,687.07
  5. Step 5: Solve for x
    x = 2,161,687.07/1,425.22
  6. Step 6: Final answer
    x = 1,516.74

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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.