Home / 1,968.10-2,715.99-1,083.90

Finding the Fourth Proportional to 1,968.10, 2,715.99 and 1,083.90

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Solution

The fourth proportional to 1,968.10, 2,715.99 and 1,083.90 is: 1,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.10 : 2,715.99 = 1,083.90 : x
  2. Step 2: Convert to fraction form
    1,968.10/2,715.99 = 1,083.90/x
  3. Step 3: Cross multiply
    1,968.10x = 2,715.99 × 1,083.90
  4. Step 4: Simplify right side
    1,968.10x = 2,943,861.56
  5. Step 5: Solve for x
    x = 2,943,861.56/1,968.10
  6. Step 6: Final answer
    x = 1,495.79

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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.