Home / 1,511.31-2,083.68-1,013.16

Finding the Fourth Proportional to 1,511.31, 2,083.68 and 1,013.16

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Solution

The fourth proportional to 1,511.31, 2,083.68 and 1,013.16 is: 1,396.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.31 : 2,083.68 = 1,013.16 : x
  2. Step 2: Convert to fraction form
    1,511.31/2,083.68 = 1,013.16/x
  3. Step 3: Cross multiply
    1,511.31x = 2,083.68 × 1,013.16
  4. Step 4: Simplify right side
    1,511.31x = 2,111,101.23
  5. Step 5: Solve for x
    x = 2,111,101.23/1,511.31
  6. Step 6: Final answer
    x = 1,396.87

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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.