Home / 1,072.12-1,605.28-1,010.69

Finding the Fourth Proportional to 1,072.12, 1,605.28 and 1,010.69

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Solution

The fourth proportional to 1,072.12, 1,605.28 and 1,010.69 is: 1,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072.12 : 1,605.28 = 1,010.69 : x
  2. Step 2: Convert to fraction form
    1,072.12/1,605.28 = 1,010.69/x
  3. Step 3: Cross multiply
    1,072.12x = 1,605.28 × 1,010.69
  4. Step 4: Simplify right side
    1,072.12x = 1,622,440.44
  5. Step 5: Solve for x
    x = 1,622,440.44/1,072.12
  6. Step 6: Final answer
    x = 1,513.30

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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.