Home / 1,813.80-2,720.70-1,449.30

Finding the Fourth Proportional to 1,813.80, 2,720.70 and 1,449.30

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Solution

The fourth proportional to 1,813.80, 2,720.70 and 1,449.30 is: 2,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.80 : 2,720.70 = 1,449.30 : x
  2. Step 2: Convert to fraction form
    1,813.80/2,720.70 = 1,449.30/x
  3. Step 3: Cross multiply
    1,813.80x = 2,720.70 × 1,449.30
  4. Step 4: Simplify right side
    1,813.80x = 3,943,110.51
  5. Step 5: Solve for x
    x = 3,943,110.51/1,813.80
  6. Step 6: Final answer
    x = 2,173.95

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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.