Home / 1,968.15-2,715.98-1,083.95

Finding the Fourth Proportional to 1,968.15, 2,715.98 and 1,083.95

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Solution

The fourth proportional to 1,968.15, 2,715.98 and 1,083.95 is: 1,495.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.15 : 2,715.98 = 1,083.95 : x
  2. Step 2: Convert to fraction form
    1,968.15/2,715.98 = 1,083.95/x
  3. Step 3: Cross multiply
    1,968.15x = 2,715.98 × 1,083.95
  4. Step 4: Simplify right side
    1,968.15x = 2,943,986.52
  5. Step 5: Solve for x
    x = 2,943,986.52/1,968.15
  6. Step 6: Final answer
    x = 1,495.81

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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.