Home / 1,977.23-2,727.99-1,645.13

Finding the Fourth Proportional to 1,977.23, 2,727.99 and 1,645.13

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Solution

The fourth proportional to 1,977.23, 2,727.99 and 1,645.13 is: 2,269.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.23 : 2,727.99 = 1,645.13 : x
  2. Step 2: Convert to fraction form
    1,977.23/2,727.99 = 1,645.13/x
  3. Step 3: Cross multiply
    1,977.23x = 2,727.99 × 1,645.13
  4. Step 4: Simplify right side
    1,977.23x = 4,487,884.55
  5. Step 5: Solve for x
    x = 4,487,884.55/1,977.23
  6. Step 6: Final answer
    x = 2,269.79

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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.