Home / 2,505.80-3,455.91-1,877.81

Finding the Fourth Proportional to 2,505.80, 3,455.91 and 1,877.81

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Solution

The fourth proportional to 2,505.80, 3,455.91 and 1,877.81 is: 2,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.80 : 3,455.91 = 1,877.81 : x
  2. Step 2: Convert to fraction form
    2,505.80/3,455.91 = 1,877.81/x
  3. Step 3: Cross multiply
    2,505.80x = 3,455.91 × 1,877.81
  4. Step 4: Simplify right side
    2,505.80x = 6,489,525.08
  5. Step 5: Solve for x
    x = 6,489,525.08/2,505.80
  6. Step 6: Final answer
    x = 2,589.80

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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.