Home / 1,986.25-2,740.95-1,101.99

Finding the Fourth Proportional to 1,986.25, 2,740.95 and 1,101.99

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Solution

The fourth proportional to 1,986.25, 2,740.95 and 1,101.99 is: 1,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.25 : 2,740.95 = 1,101.99 : x
  2. Step 2: Convert to fraction form
    1,986.25/2,740.95 = 1,101.99/x
  3. Step 3: Cross multiply
    1,986.25x = 2,740.95 × 1,101.99
  4. Step 4: Simplify right side
    1,986.25x = 3,020,499.49
  5. Step 5: Solve for x
    x = 3,020,499.49/1,986.25
  6. Step 6: Final answer
    x = 1,520.70

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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.